Also removed duplicated allow request button checkbox
Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/27050, https://gitlab.com/gitlab-org/gitlab-ce/issues/27049
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Also removed duplicated allow request button checkbox
Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/27050, https://gitlab.com/gitlab-org/gitlab-ce/issues/27049