Remove show_inherited_labels FF

- remove the FF
- adjust specs
- add changelog entry

app/controllers/concerns/show_inherited_labels_checker.rb

-# frozen_string_literal: true
-
-module ShowInheritedLabelsChecker
-  extend ActiveSupport::Concern
-
-  private
-
-  def show_inherited_labels?(include_ancestor_groups)
-    Feature.enabled?(:show_inherited_labels, @project || @group, default_enabled: true) || include_ancestor_groups # rubocop:disable Gitlab/ModuleWithInstanceVariables
-  end
-end

app/controllers/groups/labels_controller.rb

@@ -2,7 +2,6 @@
 
 class Groups::LabelsController < Groups::ApplicationController
   include ToggleSubscriptionAction
-  include ShowInheritedLabelsChecker
 
   before_action :label, only: [:edit, :update, :destroy]
   before_action :authorize_admin_labels!, only: [:new, :create, :edit, :update, :destroy]
@@ -112,7 +111,7 @@ class Groups::LabelsController < Groups::ApplicationController
         current_user,
         group_id: @group.id,
         only_group_labels: options[:only_group_labels],
-        include_ancestor_groups: show_inherited_labels?(params[:include_ancestor_groups]),
+        include_ancestor_groups: true,
         sort: sort,
         subscribed: options[:subscribed],
         include_descendant_groups: options[:include_descendant_groups],

app/controllers/projects/labels_controller.rb

@@ -2,7 +2,6 @@
 
 class Projects::LabelsController < Projects::ApplicationController
   include ToggleSubscriptionAction
-  include ShowInheritedLabelsChecker
 
   before_action :check_issuables_available!
   before_action :label, only: [:edit, :update, :destroy, :promote]
@@ -164,7 +163,7 @@ class Projects::LabelsController < Projects::ApplicationController
     @available_labels ||=
       LabelsFinder.new(current_user,
                        project_id: @project.id,
-                       include_ancestor_groups: show_inherited_labels?(params[:include_ancestor_groups]),
+                       include_ancestor_groups: true,
                        search: params[:search],
                        subscribed: params[:subscribed],
                        sort: sort).execute

config/feature_flags/development/show_inherited_labels.yml

----
-name: show_inherited_labels
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/42960
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/267547
-milestone: '13.5'
-type: development
-group: group::project management
-default_enabled: true

spec/controllers/groups/labels_controller_spec.rb

@@ -9,8 +9,6 @@ RSpec.describe Groups::LabelsController do
 
   before do
     group.add_owner(user)
-    # by default FFs are enabled in specs so we turn it off
-    stub_feature_flags(show_inherited_labels: false)
 
     sign_in(user)
   end
@@ -34,8 +32,8 @@ RSpec.describe Groups::LabelsController do
         subgroup.add_owner(user)
       end
 
-      RSpec.shared_examples 'returns ancestor group labels' do
       it 'returns ancestor group labels' do
+        params = { group_id: subgroup, only_group_labels: true }
         get :index, params: params, format: :json
 
         label_ids = json_response.map {|label| label['title']}
@@ -43,35 +41,6 @@ RSpec.describe Groups::LabelsController do
       end
     end
 
-      context 'when include_ancestor_groups true' do
-        let(:params) { { group_id: subgroup, include_ancestor_groups: true, only_group_labels: true } }
-
-        it_behaves_like 'returns ancestor group labels'
-      end
-
-      context 'when include_ancestor_groups false' do
-        let(:params) { { group_id: subgroup, only_group_labels: true } }
-
-        it 'does not return ancestor group labels', :aggregate_failures do
-          get :index, params: params, format: :json
-
-          label_ids = json_response.map {|label| label['title']}
-          expect(label_ids).to match_array([subgroup_label_1.title])
-          expect(label_ids).not_to include([group_label_1.title])
-        end
-      end
-
-      context 'when show_inherited_labels enabled' do
-        let(:params) { { group_id: subgroup } }
-
-        before do
-          stub_feature_flags(show_inherited_labels: true)
-        end
-
-        it_behaves_like 'returns ancestor group labels'
-      end
-    end
-
     context 'external authorization' do
       subject { get :index, params: { group_id: group.to_param } }
 

spec/controllers/projects/labels_controller_spec.rb

@@ -84,8 +84,8 @@ RSpec.describe Projects::LabelsController do
         create(:label_priority, project: project, label: subgroup_label_2, priority: 1)
       end
 
-      RSpec.shared_examples 'returns ancestor group labels' do
       it 'returns ancestor group labels', :aggregate_failures do
+        params = { namespace_id: project.namespace.to_param, project_id: project }
         get :index, params: params
 
         expect(assigns(:labels)).to match_array([subgroup_label_1] + group_labels + project_labels)
@@ -93,40 +93,6 @@ RSpec.describe Projects::LabelsController do
       end
     end
 
-      context 'when show_inherited_labels disabled' do
-        before do
-          stub_feature_flags(show_inherited_labels: false)
-        end
-
-        context 'when include_ancestor_groups false' do
-          let(:params) { { namespace_id: project.namespace.to_param, project_id: project } }
-
-          it 'does not return ancestor group labels', :aggregate_failures do
-            get :index, params: params
-
-            expect(assigns(:labels)).to match_array([subgroup_label_1] + project_labels)
-            expect(assigns(:prioritized_labels)).to match_array([subgroup_label_2] + project_priority_labels)
-          end
-        end
-
-        context 'when include_ancestor_groups true' do
-          let(:params) { { namespace_id: project.namespace.to_param, project_id: project, include_ancestor_groups: true } }
-
-          it_behaves_like 'returns ancestor group labels'
-        end
-      end
-
-      context 'when show_inherited_labels enabled' do
-        let(:params) { { namespace_id: project.namespace.to_param, project_id: project } }
-
-        before do
-          stub_feature_flags(show_inherited_labels: true)
-        end
-
-        it_behaves_like 'returns ancestor group labels'
-      end
-    end
-
     def list_labels
       get :index, params: { namespace_id: project.namespace.to_param, project_id: project }
     end