Remove approval_policy_disable_bot_comment ffs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/160465



Merged-by: Alexander Turinske <aturinske@gitlab.com>
Approved-by: Artur Fedorov <afedorov@gitlab.com>
Approved-by: Dominic Bauer <dbauer@gitlab.com>
Approved-by: Marcos Rocha <mrocha@gitlab.com>
Reviewed-by: Alexander Turinske <aturinske@gitlab.com>
Reviewed-by: Artur Fedorov <afedorov@gitlab.com>