No longer need to ignore temporary branch.

* Now it's only created when user choose to create a MR and
  logic to hide it is handled by https://gitlab.com/gitlab-org/gitlab-ce/blob/50595af7b0e304f16e2955109abd2d25cd96efda/app/helpers/application_helper.rb#L139

app/helpers/application_helper.rb

@@ -135,8 +135,6 @@ module ApplicationHelper
     # Skip if user removed branch right after that
     return false unless project.repository.branch_names.include?(event.branch_name)
 
-    return false if event.branch_name =~ Gitlab::Git::REVERT_BRANCH_PATTERN
-
     true
   end
 

app/models/commit.rb

@@ -216,7 +216,7 @@ class Commit
   end
 
   def revert_branch_name
-    "revert-#{project.id}-#{short_id}"
+    "revert-#{short_id}"
   end
 
   def revert_message