Don’t test for existance of `current_user`
Don’t test for existance of `current_user`

Current_user is never falsy - it's an `AnonymousUserMixin` when
someone's not logged in.

alphagov/notifications-admin,gov-cjwaszczuk/notifications-admin,gov-cjwaszczuk/notifications-admin,alphagov/notifications-admin,alphagov/notifications-admin,gov-cjwaszczuk/notifications-admin,alphagov/notifications-admin,gov-cjwaszczuk/notifications-admin