Remove code introduced when endpoint was in MR controller.

app/controllers/projects/merge_requests_controller.rb

@@ -2,8 +2,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
   before_action :module_enabled
   before_action :merge_request, only: [
     :edit, :update, :show, :diffs, :commits, :builds, :merge, :merge_check,
-    :ci_status, :toggle_subscription, :cancel_merge_when_build_succeeds,
-    :revert
+    :ci_status, :toggle_subscription, :cancel_merge_when_build_succeeds
   ]
   before_action :closes_issues, only: [:edit, :update, :show, :diffs, :commits, :builds]
   before_action :validates_merge_request, only: [:show, :diffs, :commits, :builds]

config/routes.rb

@@ -591,7 +591,6 @@ Rails.application.routes.draw do
             post :cancel_merge_when_build_succeeds
             get :ci_status
             post :toggle_subscription
-            post :revert
           end
           collection do