Remove toggle from More controller to always render design system lay…

…out.

app/controllers/admin/more_controller.rb

@@ -1,22 +1,5 @@
 class Admin::MoreController < Admin::BaseController
-  before_action :check_new_design_system_permissions, only: %i[index]
-  layout :get_layout
+  layout "design_system"
 
   def index; end
-
-private
-
-  def check_new_design_system_permissions
-    forbidden! unless new_design_system?
-  end
-
-  def get_layout
-    design_system_actions = %w[index] if preview_design_system?(next_release: false)
-
-    if design_system_actions&.include?(action_name)
-      "design_system"
-    else
-      "admin"
-    end
-  end
 end

test/functional/admin/more_controller_test.rb

@@ -2,7 +2,7 @@
 
 class Admin::MoreControllerTest < ActionController::TestCase
   setup do
-    login_as_preview_design_system_user :writer
+    login_as :writer
   end
 
   view_test "GET #index renders the 'More' page with a correctly formatted list of links" do