Use IntegrationsHelper for scoped paths

In group / admin controllers, we had some redundant
scoped edit paths. This is now replaced with a method
in IntegrationsHelper so it's cleaner to consolidate here.

app/controllers/admin/integrations_controller.rb

@@ -25,8 +25,4 @@ class Admin::IntegrationsController < Admin::ApplicationController
   def find_or_initialize_non_project_specific_integration(name)
     Integration.find_or_initialize_non_project_specific_integration(name, instance: true)
   end
-
-  def scoped_edit_integration_path(integration)
-    edit_admin_application_settings_integration_path(integration)
-  end
 end

app/controllers/groups/settings/integrations_controller.rb

@@ -4,6 +4,7 @@ module Groups
   module Settings
     class IntegrationsController < Groups::ApplicationController
       include IntegrationsActions
+      include IntegrationsHelper
 
       before_action :authorize_admin_group!
 
@@ -26,10 +27,6 @@ module Groups
       def find_or_initialize_non_project_specific_integration(name)
         Integration.find_or_initialize_non_project_specific_integration(name, group_id: group.id)
       end
-
-      def scoped_edit_integration_path(integration)
-        edit_group_settings_integration_path(group, integration)
-      end
     end
   end
 end