Merge branch 'doc-ff-rm-group-protected-env' into 'master'

Remove FF for group protected environment settings

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/100841



Merged-by: Shinya Maeda <shinya@gitlab.com>
Approved-by: Alishan Ladhani <aladhani@gitlab.com>
Approved-by: Russell Dickenson <rdickenson@gitlab.com>
Approved-by: Shinya Maeda <shinya@gitlab.com>
Co-authored-by: Bala Kumar <sbalakumar@gitlab.com>

doc/ci/environments/protected_environments.md

@@ -194,7 +194,7 @@ and are protected at the same time.
 ### Configure group-level memberships
 
 > - Operators are required to have Owner+ role from the original Maintainer+ role and this role change is introduced from GitLab 15.3 [with a flag](https://gitlab.com/gitlab-org/gitlab/-/issues/369873) named `group_level_protected_environment_settings_permission`. Enabled by default.
-> - Original behavior where Operators are required to have Maintainer+ role can be achieved by enabling [flag](https://gitlab.com/gitlab-org/gitlab/-/issues/369875) named `override_group_level_protected_environment_settings_permission`. Disabled by default.
+> - [Feature flag removed](https://gitlab.com/gitlab-org/gitlab/-/issues/369873) in GitLab 15.4.
 
 To maximize the effectiveness of group-level protected environments,
 [group-level memberships](../../user/group/index.md) must be correctly