routes cleanup

config/routes.rb

@@ -1,6 +1,8 @@
 # Plugin's routes
 # See: http://guides.rubyonrails.org/routing.html
 
-resources :projects do
+# Don't create routes for repositories resources with only: []
+# do not override Redmine's routes.
+resources :projects, only: [] do
   resource :messenger_setting, only: %i[show update]
 end