Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
We remove the ID from the hidden tag for merge_request[force_remove_source_branch]
in order to fix the checkbox toggling when the associated label is clicked.
The issue was introduced by !7267 (merged) and discovered in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7267#note_18028311.