Revert "ci: Enable FreeBSD CI"
Revert "ci: Enable FreeBSD CI"

This partially reverts commit bfc362cb68cc496a17d7edd0388ac7ade4afc808.

The FreeBSD CI runner still seems to be a bit flakey, and appears to be
offline entirely at the moment.

Signed-off-by: Philip Withnall <29c2a2ac2a854b9cf047275aa9de346d096be2e0@endlessm.com>
Reviewed-by: nobody

endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib