Merge branch 'reduce-notice-count' into 'master'

Remove annoying notice messages when create/update merge request

See merge request !1681

app/controllers/projects/merge_requests_controller.rb

@@ -78,10 +78,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
     @merge_request = MergeRequests::CreateService.new(project, current_user, merge_request_params).execute
 
     if @merge_request.valid?
-      redirect_to(
-        merge_request_path(@merge_request),
-        notice: 'Merge request was successfully created.'
-      )
+      redirect_to(merge_request_path(@merge_request))
     else
       @source_project = @merge_request.source_project
       @target_project = @merge_request.target_project
@@ -97,8 +94,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
         format.js
         format.html do
           redirect_to([@merge_request.target_project.namespace.becomes(Namespace),
-                       @merge_request.target_project, @merge_request],
-                      notice: 'Merge request was successfully updated.')
+                       @merge_request.target_project, @merge_request])
         end
         format.json do
           render json: {