Merge branch '219004-remove-ghost-ignore-statement' into 'master'

Remove users.ghost ignore statement

Closes #219004

See merge request gitlab-org/gitlab!35621

app/models/user.rb

@@ -69,8 +69,6 @@ class User < ApplicationRecord
 
   MINIMUM_INACTIVE_DAYS = 180
 
-  ignore_column :ghost, remove_with: '13.2', remove_after: '2020-06-22'
-
   # Override Devise::Models::Trackable#update_tracked_fields!
   # to limit database writes to at most once every hour
   # rubocop: disable CodeReuse/ServiceClass