Remove support for merge request bulk update

app/views/groups/merge_requests.html.haml

@@ -9,13 +9,8 @@
     = render 'shared/issuable/nav', type: :merge_requests
     - if current_user
       .nav-controls
-        - if @can_bulk_update
-          = button_tag _('Edit merge requests'), class: 'btn btn-default append-right-10 js-bulk-update-toggle'
         = render 'shared/new_project_item_select', path: 'merge_requests/new', label: "New merge request", type: :merge_requests, with_feature_enabled: 'merge_requests', with_shared: false, include_projects_in_subgroups: true
 
   = render 'shared/issuable/search_bar', type: :merge_requests
 
-  - if @can_bulk_update
-    = render 'shared/issuable/group_bulk_update_sidebar', type: :merge_requests
-
   = render 'shared/merge_requests'

ee/app/controllers/groups/merge_requests_controller.rb

-# frozen_string_literal: true
-
-class Groups::MergeRequestsController < Groups::ApplicationController
-  include IssuableActions
-
-  before_action :authorize_admin_group!
-  before_action :verify_group_bulk_edit_enabled!, only: [:bulk_update]
-
-  private
-
-  def verify_group_bulk_edit_enabled!
-    render_404 unless @group.feature_available?(:group_bulk_edit)
-  end
-end

ee/config/routes/group.rb

@@ -78,12 +78,6 @@ constraints(::Constraints::GroupUrlConstrainer.new) do
       end
     end
 
-    resources :merge_requests, only: [] do
-      collection do
-        post :bulk_update
-      end
-    end
-
     resources :todos, only: [:create]
     resources :boards, only: [:create, :update, :destroy] do
       collection do

ee/spec/routing/group_routing_spec.rb

@@ -88,12 +88,4 @@ describe 'Group routing', "routing" do
       expect(post('/groups/gitlabhq/-/issues/bulk_update')).to route_to('groups/issues#bulk_update', group_id: 'gitlabhq')
     end
   end
-
-  describe 'merge_requests' do
-    it 'routes post to #bulk_update' do
-      allow(Group).to receive(:find_by_full_path).with('gitlabhq', any_args).and_return(true)
-
-      expect(post('/groups/gitlabhq/-/merge_requests/bulk_update')).to route_to('groups/merge_requests#bulk_update', group_id: 'gitlabhq')
-    end
-  end
 end