Remove old GitLab versions from Source Code docs

doc/administration/git_protocol.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 description: "Set and configure Git protocol v2"
 ---
 
 # Configuring Git Protocol v2 **(FREE)**
 
-> - [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/46555) in GitLab 11.4.
-> - [Temporarily disabled](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/55769) in GitLab 11.5.8, 11.6.6, 11.7.1, and 11.8+.
-> - [Re-enabled](https://gitlab.com/gitlab-org/gitlab/-/issues/27828) in GitLab 12.8.
+> [Re-enabled](https://gitlab.com/gitlab-org/gitlab/-/issues/27828) in GitLab 12.8.
 
 Git protocol v2 improves the v1 wire protocol in several ways and is
 enabled by default in GitLab for HTTP requests. In order to enable SSH,

doc/api/markdown.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, api
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Markdown API **(FREE)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/18926) in GitLab 11.0.
-
 Available only in APIv4.
 
 ## Render an arbitrary Markdown document

doc/api/project_badges.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, api
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Project badges API **(FREE)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/17082) in GitLab 10.6.
-
 ## Placeholder tokens
 
 Badges support placeholders that are replaced in real-time in both the link and image URL. The allowed placeholders are:

doc/api/project_import_export.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, api
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Project import/export API **(FREE)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/41899) in GitLab 10.6.
-
 See also:
 
 - [Project import/export documentation](../user/project/settings/import_export.md).
@@ -23,7 +20,7 @@ all the necessary information to upload the exported project to a web server or
 to any S3-compatible platform. At the moment we only support binary
 data file uploads to the final server.
 
-From GitLab 10.7, the `upload[url]` parameter is required if the `upload` parameter is present.
+The `upload[url]` parameter is required if the `upload` parameter is present.
 
 ```plaintext
 POST /projects/:id/export

doc/api/project_templates.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, api
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Project templates API **(FREE)**
@@ -21,9 +20,7 @@ It deprecates these endpoints, which are scheduled for removal in API version 5.
 In addition to templates common to the entire instance, project-specific
 templates are also available from this API endpoint.
 
-Support for [Group-level file templates](../user/group/index.md#group-file-templates) **(PREMIUM)**
-was [added](https://gitlab.com/gitlab-org/gitlab/-/issues/5987)
-in GitLab 11.5
+Support is also available for [group-level file templates](../user/group/index.md#group-file-templates). **(PREMIUM)**
 
 ## Get all templates of a particular type
 

doc/api/protected_branches.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, api
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Protected branches API **(FREE)**
 
-> Introduced in GitLab 9.5.
-
 **Valid access levels**
 
 The access levels are defined in the `ProtectedRefAccess.allowed_access_levels` method. Currently, these levels are recognized:

doc/api/protected_tags.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, api
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Protected tags API **(FREE)**
 
-> Introduced in GitLab 11.3.
-
 **Valid access levels**
 
 Currently, these levels are recognized:

doc/api/repository_submodules.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, api
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Repository submodules API **(FREE)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/41213) in GitLab 11.5
-
 ## Update existing submodule reference in repository
 
 In some workflows, especially automated ones, it can be useful to update a

doc/api/search.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, api
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Search API **(FREE)**
 
-> - [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/41763) in GitLab 10.5.
-> - [Feature flag `search_filter_by_confidential` removed](https://gitlab.com/gitlab-org/gitlab/-/issues/244923) in GitLab 13.6.
+> [Feature flag `search_filter_by_confidential` removed](https://gitlab.com/gitlab-org/gitlab/-/issues/244923) in GitLab 13.6.
 
 Every API call to search must be authenticated.
 

doc/api/tags.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, api
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Tags API **(FREE)**
@@ -26,8 +25,6 @@ Parameters:
 | `sort` | string | no | Return tags sorted in `asc` or `desc` order. Default is `desc` |
 | `search` | string | no | Return list of tags matching the search criteria. You can use `^term` and `term$` to find tags that begin and end with `term` respectively. |
 
-> Support for `search` was [introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/54401) in GitLab 11.8.
-
 ```json
 [
   {

doc/user/markdown.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, howto
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # GitLab Flavored Markdown **(FREE)**
@@ -1507,56 +1506,3 @@ entry and paste the spreadsheet:
   at Daring Fireball is an excellent resource for a detailed explanation of standard Markdown.
 - You can find the detailed specification for CommonMark in the [CommonMark Spec](https://spec.commonmark.org/current/).
 - The [CommonMark Dingus](https://spec.commonmark.org/dingus/) helps you test CommonMark syntax.
-
-## Transition from Redcarpet to CommonMark
-
-- In GitLab 11.8, the [Redcarpet Ruby library](https://github.com/vmg/redcarpet)
-  was removed. All issues and comments, including those in 11.1 and earlier, are now processed
-  by using the [CommonMark Ruby Library](https://github.com/gjtorikian/commonmarker).
-- In GitLab 11.3 and later, CommonMark processes wiki pages and Markdown
-  files (`*.md`) in repositories.
-- In GitLab 11.1 and later, the [CommonMark Ruby Library](https://github.com/gjtorikian/commonmarker)
-  for Markdown processes all new issues, merge requests, comments, and other Markdown
-  content.
-
-The documentation website migrated its Markdown engine
-[from Redcarpet to Kramdown](https://gitlab.com/gitlab-org/gitlab-docs/-/merge_requests/108)
-in October 2018.
-
-You may have older issues, merge requests, or Markdown documents in your
-repository that relied upon nuances of the GitLab RedCarpet version
-of Markdown. Because CommonMark uses slightly stricter syntax, these documents
-may now appear differently after the transition to CommonMark.
-
-For example, numbered lists with nested lists may
-render incorrectly:
-
-```markdown
-1. Chocolate
-  - dark
-  - milk
-```
-
-To fix this issue, add a space to each nested item. The `-` must be aligned with the first
-character of the top list item (`C` in this case):
-
-```markdown
-1. Chocolate
-   - dark
-   - milk
-```
-
-1. Chocolate
-   - dark
-   - milk
-
-We flag any significant differences between Redcarpet and CommonMark Markdown in this document.
-
-If you have many Markdown files, it can be tedious to determine
-if they display correctly or not. You can use the
-[`diff_redcarpet_cmark`](https://gitlab.com/digitalmoksha/diff_redcarpet_cmark)
-tool to generate a list of files and the
-differences between how RedCarpet and CommonMark render the files. It indicates
-if any changes are needed.
-
-`diff_redcarpet_cmark` is not an officially supported product.

doc/user/project/badges.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, howto
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Badges **(FREE)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/41174) in GitLab 10.7.
-
 Badges are a unified way to present condensed pieces of information about your
 projects. They consist of a small image and a URL that the image
 points to. Examples for badges can be the [pipeline status](../../ci/pipelines/settings.md#pipeline-status-badge),

doc/user/project/code_owners.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Code Owners **(PREMIUM)**
 
-> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/6916) in GitLab 11.3.
-> - Code Owners for merge request approvals was [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/4418) in GitLab Premium 11.9.
-> - Moved to GitLab Premium in 13.9.
+> Moved to GitLab Premium in 13.9.
 
 INFO:
 Get access to Code Owners and more with a

doc/user/project/file_lock.md

@@ -2,7 +2,6 @@
 stage: Create
 group: Source Code
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
-type: reference, howto
 ---
 
 # File Locking **(FREE)**
@@ -43,8 +42,6 @@ locked by Administrator`.
 
 ## Exclusive file locks **(FREE)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/35856) in GitLab 10.5.
-
 This process allows you to lock single files or file extensions and it is
 done through the command line. It doesn't require GitLab paid subscriptions.
 

doc/user/project/merge_requests/approvals/rules.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, concepts
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Merge request approval rules **(PREMIUM)**
@@ -146,8 +145,7 @@ approve in these ways:
 
 ### Code owners as eligible approvers **(PREMIUM)**
 
-> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/7933) in GitLab 11.5.
-> - Moved to GitLab Premium in 13.9.
+> Moved to GitLab Premium in 13.9.
 
 If you add [code owners](../../code_owners.md) to your repository, the owners of files
 become eligible approvers in the project. To enable this merge request approval rule:

doc/user/project/merge_requests/approvals/settings.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, concepts
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Merge request approval settings **(PREMIUM)**
@@ -32,8 +31,7 @@ In this section of general settings, you can configure the following settings:
 
 ## Prevent approval by author
 
-> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/3349) in GitLab 11.3.
-> - Moved to GitLab Premium in 13.9.
+> Moved to GitLab Premium in 13.9.
 
 By default, the author of a merge request cannot approve it. To change this setting:
 
@@ -54,8 +52,7 @@ this setting, unless you configure one of these options:
 
 ## Prevent approvals by users who add commits
 
-> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/10441) in GitLab 11.10.
-> - Moved to GitLab Premium in 13.9.
+> Moved to GitLab Premium in 13.9.
 
 By default, users who commit to a merge request can still approve it. At both
 the project level or [instance level](../../../admin_area/merge_requests_approvals.md)

doc/user/project/protected_branches.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, howto
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Protected branches **(FREE)**
@@ -76,8 +75,6 @@ The protected branch displays in the list of protected branches.
 
 ## Create a protected branch
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/53361) in GitLab 11.9.
-
 Users with the Developer or higher [role](../permissions.md) can create a protected branch.
 
 Prerequisites:

doc/user/project/protected_tags.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, howto
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Protected tags **(FREE)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/10356) in GitLab 9.1.
-
 Protected tags:
 
 - Allow control over who has permission to create tags.

doc/user/project/push_options.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: reference, howto
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Push Options **(FREE)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/15643) in GitLab 11.7.
-
 GitLab supports using client-side [Git push options](https://git-scm.com/docs/git-push#Documentation/git-push.txt--oltoptiongt)
 to perform various actions at the same time as pushing changes. Additionally, [Push Rules](../../push_rules/push_rules.md) offer server-side control and enforcement options.
 

doc/user/project/repository/gpg_signed_commits/index.md

 ---
 stage: Create
 group: Source Code
-info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments"
-type: concepts, howto
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
 # Signing commits with GPG **(FREE)**
 
-> - [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/9546) in GitLab 9.5.
-> - Subkeys support was added in GitLab 10.1.
-
 You can use a GPG key to sign Git commits made in a GitLab repository. Signed
 commits are labeled **Verified** if the identity of the committer can be
 verified. To verify the identity of a committer, GitLab requires their public

doc/user/project/repository/index.md

@@ -2,7 +2,6 @@
 stage: Create
 group: Source Code
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
-type: concepts, howto
 ---
 
 # Repository **(FREE)**
@@ -66,8 +65,6 @@ Alternatively, you can clone directly into a code editor.
 
 ### Clone and open in Apple Xcode
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/45820) in GitLab 11.0.
-
 Projects that contain a `.xcodeproj` or `.xcworkspace` directory can be cloned
 into Xcode on macOS.
 
@@ -98,8 +95,7 @@ Visual Studio Code:
 
 ## Download the code in a repository
 
-> - Support for directory download was [introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/24704) in GitLab 11.11.
-> - Support for [including Git LFS blobs](../../../topics/git/lfs#lfs-objects-in-project-archives) was [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/15079) in GitLab 13.5.
+> Support for [including Git LFS blobs](../../../topics/git/lfs#lfs-objects-in-project-archives) was [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/15079) in GitLab 13.5.
 
 You can download the source code that's stored in a repository.
 

doc/user/project/repository/mirror/index.md

@@ -213,7 +213,7 @@ used in commits. To fix this problem, either:
 
 ### Deadline Exceeded
 
-When upgrading to GitLab 11.11.8 or later, a change in how usernames are represented means that you
+When upgrading GitLab, a change in how usernames are represented means that you
 must update your mirroring username and password to ensure that `%40` characters are replaced with `@`.
 
 ### Connection blocked because server only allows public key authentication