Remove announcement from Source Code

Per Torsten, we may need to remove this item from the removals list.
Let's prep a merge request if that turns out to be the case.

data/removals/15_0/15-0-remove_ff_push_rules_supersede_code_owners.yml

-- name: "Removed feature flag PUSH_RULES_SUPERSEDE_CODE_OWNERS"  # The name of the feature to be deprecated
-  announcement_milestone: "14.8"  # The milestone when this feature was first announced as deprecated.
-  announcement_date: "2022-02-22"  # The date of the milestone release when this feature was first announced as deprecated. This should almost always be the 22nd of a month (YYYY-MM-22), unless you did an out of band blog post.
-  removal_milestone: "15.0"  # The milestone when this feature is planned to be removed
-  removal_date: "2022-05-22"  # The date of the milestone release when this feature is planned to be removed. This should almost always be the 22nd of a month (YYYY-MM-22), unless you did an out of band blog post.
-  breaking_change: true  # If this deprecation is a breaking change, set this value to true
-  reporter: tlinz  # GitLab username of the person reporting the deprecation
-  body: |  # Do not modify this line, instead modify the lines below.
-    The feature flag `PUSH_RULES_SUPERSEDE_CODE_OWNERS` has been removed in GitLab 15.0. From now on, push rules will supersede CODEOWNERS. The CODEOWNERS feature is no longer available for access control.
-# The following items are not published on the docs page, but may be used in the future.
-  stage: create  # (optional - may be required in the future) String value of the stage that the feature was created in. e.g., Growth
-  tiers:  # (optional - may be required in the future) An array of tiers that the feature is available in currently.  e.g., [Free, Silver, Gold, Core, Premium, Ultimate]
-  issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/262019   # (optional) This is a link to the deprecation issue in GitLab
-  documentation_url:  # (optional) This is a link to the current documentation page
-  image_url:  # (optional) This is a link to a thumbnail image depicting the feature
-  video_url:  # (optional) Use the youtube thumbnail URL with the structure of https://img.youtube.com/vi/UNIQUEID/hqdefault.jpg

doc/update/removals.md

@@ -30,16 +30,6 @@ For removal reviewers (Technical Writers only):
 
 ## 15.0
 
-### Removed feature flag PUSH_RULES_SUPERSEDE_CODE_OWNERS
-
-WARNING:
-This feature was changed or removed in 15.0
-as a [breaking change](https://docs.gitlab.com/ee/development/contributing/#breaking-changes).
-Before updating GitLab, review the details carefully to determine if you need to make any
-changes to your code, settings, or workflow.
-
-The feature flag `PUSH_RULES_SUPERSEDE_CODE_OWNERS` has been removed in GitLab 15.0. From now on, push rules will supersede CODEOWNERS. The CODEOWNERS feature is no longer available for access control.
-
 ### Request a new review
 
 The ability to [request a new review](https://docs.gitlab.com/ee/user/project/merge_requests/reviews/#request-a-new-review) has been removed in GitLab 15.0. This feature is replaced with [requesting attention](https://docs.gitlab.com/ee/user/project/merge_requests/#request-attention-to-a-merge-request) to a merge request.