Remove new lines.

app/services/notification_service.rb

@@ -88,9 +88,7 @@ class NotificationService
   #
   def merge_mr(merge_request, current_user)
     recipients = reject_muted_users([merge_request.author, merge_request.assignee], merge_request.target_project)
-
     recipients = recipients.concat(project_watchers(merge_request.target_project)).uniq
-
     recipients.delete(merge_request.merge_event.author) if merge_request.merged?
 
     recipients.each do |recipient|