Remove wiki_events_on_git_push feature flag

This enables activity events for wiki pages created through git access.

app/services/git/wiki_push_service.rb

@@ -34,9 +34,7 @@ module Git
     def can_process_wiki_events?
       # TODO: Support activity events for group wikis
       # https://gitlab.com/gitlab-org/gitlab/-/issues/209306
-      return false unless wiki.is_a?(ProjectWiki)
-
-      Feature.enabled?(:wiki_events_on_git_push, wiki.container)
+      wiki.is_a?(ProjectWiki)
     end
 
     def push_changes

changelogs/unreleased/ajk-remove-wiki_events_on_git_push-ff.yml

+---
+title: Enable wiki events on git push
+merge_request: 43738
+author:
+type: added

config/feature_flags/development/wiki_events_on_git_push.yml

----
-name: wiki_events_on_git_push
-introduced_by_url: 
-rollout_issue_url: 
-group: 
-type: development
-default_enabled: false

doc/user/project/wiki/index.md

@@ -163,48 +163,13 @@ Similar to versioned diff file views, you can see the changes made in a given Wi
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/14902) in **GitLab 12.10.**
 > - Git events were [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/216014) in **GitLab 13.0.**
-> - It's enabled on GitLab.com.
-> - Git access activity creation is managed by a feature flag.
-> - To use it in GitLab self-managed instances, ask a GitLab administrator to [enable it](#enable-or-disable-wiki-events-in-git). **(CORE ONLY)**
+> - [Feature flag for Git events was removed](https://gitlab.com/gitlab-org/gitlab/-/issues/258665) in **GitLab 13.5**
 
 Wiki events (creation, deletion, and updates) are tracked by GitLab and
 displayed on the [user profile](../../profile/index.md#user-profile),
 [group](../../group/index.md#view-group-activity),
 and [project](../index.md#project-activity) activity pages.
 
-### Enable or disable Wiki events in Git **(CORE ONLY)**
-
-Tracking wiki events through Git is under development and not ready for production use. It is
-deployed behind a feature flag that is **disabled by default**.
-[GitLab administrators with access to the GitLab Rails console](../../../administration/feature_flags.md)
-can enable it for your instance.
-
-To enable it:
-
-```ruby
-Feature.enable(:wiki_events_on_git_push)
-```
-
-To enable for just a particular project:
-
-```ruby
-project = Project.find_by_full_path('your-group/your-project')
-Feature.enable(:wiki_events_on_git_push, project)
-```
-
-To disable it:
-
-```ruby
-Feature.disable(:wiki_events_on_git_push)
-```
-
-To disable for just a particular project:
-
-```ruby
-project = Project.find_by_full_path('your-group/your-project')
-Feature.disable(:wiki_events_on_git_push, project)
-```
-
 ## Adding and editing wiki pages locally
 
 Since wikis are based on Git repositories, you can clone them locally and edit

spec/services/git/wiki_push_service_spec.rb

@@ -254,24 +254,6 @@ RSpec.describe Git::WikiPushService, services: true do
           service.execute
         end
       end
-
-      context 'the wiki_events_on_git_push feature is disabled' do
-        before do
-          stub_feature_flags(wiki_events_on_git_push: false)
-        end
-
-        it_behaves_like 'a no-op push'
-
-        context 'but is enabled for a given container' do
-          before do
-            stub_feature_flags(wiki_events_on_git_push: wiki.container)
-          end
-
-          it 'creates events' do
-            expect { process_changes { write_new_page } }.to change(Event, :count).by(1)
-          end
-        end
-      end
     end
   end