Remove cloud license promotion banner

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/159243



Merged-by: Vitali Tatarintev <vtatarintev@gitlab.com>
Approved-by: Ezekiel Kigbo <3397881-ekigbo@users.noreply.gitlab.com>
Approved-by: Lukas Wanko <lwanko@gitlab.com>
Approved-by: Vitali Tatarintev <vtatarintev@gitlab.com>
Approved-by: Nataliia Radina <nradina@gitlab.com>
Reviewed-by: Vitali Tatarintev <vtatarintev@gitlab.com>
Co-authored-by: Austin Regnery <aregnery@gitlab.com>