Merge branch 'mk/clean-up-pipeline-replicator-code' into 'master'

Cleanup geo_pipeline_replication feature flag

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144549



Merged-by: Hordur Freyr Yngvason <hfyngvason@gitlab.com>
Approved-by: Hordur Freyr Yngvason <hfyngvason@gitlab.com>
Approved-by: Ian Baum <ibaum@gitlab.com>
Approved-by: Douglas Barbosa Alexandre <dbalexandre@gmail.com>
Co-authored-by: Michael Kozono <mkozono@gitlab.com>