Refactor merge request routing

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

ee/config/routes/project.rb

@@ -87,8 +87,6 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
         namespace :analytics do
           resources :code_reviews, only: [:index]
         end
-
-        draw :merge_requests_ee
       end
       # End of the /-/ scope.