Remove the generic_packages feature flag

It has been enabled by default for more than a year now

Changelog: other

config/feature_flags/development/generic_packages.yml

----
-name: generic_packages
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/40045
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/239133
-milestone: '13.4'
-type: development
-group: group::release
-default_enabled: true

doc/user/packages/generic_packages/index.md

@@ -6,12 +6,8 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # GitLab Generic Packages Repository **(FREE)**
 
-> - [Introduced](https://gitlab.com/groups/gitlab-org/-/epics/4209) in GitLab 13.5.
-> - It's [deployed behind a feature flag](../../../user/feature_flags.md), enabled by default.
-> - It's enabled on GitLab.com.
-> - It's able to be enabled or disabled per-project.
-> - It's recommended for production use.
-> - For GitLab self-managed instances, GitLab administrators can opt to [disable it](#enable-or-disable-generic-packages-in-the-package-registry).
+> - [Introduced](https://gitlab.com/groups/gitlab-org/-/epics/4209) in GitLab 13.5 [with a flag](../../../administration/feature_flags.md) named `generic_packages`. Enabled by default.
+> - Generally available in GitLab 14.8. [Feature flag `generic_packages`](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/80886) removed.
 
 Publish generic files, like release binaries, in your project's Package Registry. Then, install the packages whenever you need to use them as a dependency.
 
@@ -194,31 +190,6 @@ upload:
     - Invoke-RestMethod -Headers @{ "JOB-TOKEN"="$CI_JOB_TOKEN" } -InFile path/to/file.txt -uri "${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/generic/my_package/0.0.1/file.txt" -Method put
 ```
 
-### Enable or disable generic packages in the Package Registry
-
-Support for generic packages is under development but ready for production use.
-It is deployed behind a feature flag that is **enabled by default**.
-[GitLab administrators with access to the GitLab Rails console](../../../administration/feature_flags.md)
-can opt to disable it.
-
-To enable it:
-
-```ruby
-# For the instance
-Feature.enable(:generic_packages)
-# For a single project
-Feature.enable(:generic_packages, Project.find(<project id>))
-```
-
-To disable it:
-
-```ruby
-# For the instance
-Feature.disable(:generic_packages)
-# For a single project
-Feature.disable(:generic_packages, Project.find(<project id>))
-```
-
 ### Generic package sample project
 
 The [Write CI-CD Variables in Pipeline](https://gitlab.com/guided-explorations/cfg-data/write-ci-cd-variables-in-pipeline) project contains a working example you can use to create, upload, and download generic packages in GitLab CI/CD.

lib/api/generic_packages.rb

@@ -14,8 +14,6 @@ module API
     before do
       require_packages_enabled!
       authenticate_non_get!
-
-      require_generic_packages_available!
     end
 
     params do
@@ -113,10 +111,6 @@ module API
       include ::API::Helpers::PackagesHelpers
       include ::API::Helpers::Packages::BasicAuthHelpers
 
-      def require_generic_packages_available!
-        not_found! unless Feature.enabled?(:generic_packages, project, default_enabled: true)
-      end
-
       def project
         authorized_user_project
       end

spec/requests/api/generic_packages_spec.rb

@@ -170,17 +170,6 @@ RSpec.describe API::GenericPackages do
       end
     end
 
-    context 'generic_packages feature flag is disabled' do
-      it 'responds with 404 Not Found' do
-        stub_feature_flags(generic_packages: false)
-        project.add_developer(user)
-
-        authorize_upload_file(workhorse_headers.merge(personal_access_token_header))
-
-        expect(response).to have_gitlab_http_status(:not_found)
-      end
-    end
-
     def authorize_upload_file(request_headers, package_name: 'mypackage', file_name: 'myfile.tar.gz')
       url = "/projects/#{project.id}/packages/generic/#{package_name}/0.0.1/#{file_name}/authorize"