Destroy user associations in batches
What does this MR do?
As we do when destroying projects in https://gitlab.com/gitlab-org/gitlab/blob/master/app/services/projects/destroy_service.rb#L157, the User model is also one entity with a lot of associations, therefore it makes sense to delete them in batches and avoid loading them.
The new functionality is behind the feature flag destroy_user_associations_in_batches
Does this MR meet the acceptance criteria?
Conformity
Edited by Francisco Javier López