Remove the explicit order set for the initializer

This will fix the regression added on
b068e20b35.

See tests added at ff08d31 to a better understanding about the problem

actionview/lib/action_view/railtie.rb

@@ -36,7 +36,7 @@ module ActionView
       end
     end
 
-    initializer "action_view.setup_action_pack", before: :add_view_paths do |app|
+    initializer "action_view.setup_action_pack" do |app|
       ActiveSupport.on_load(:action_controller) do
         ActionView::RoutingUrlFor.send(:include, ActionDispatch::Routing::UrlFor)
       end