This reverts commit c0c9303bd63468afe146ad729cf963ee06a1777f.
Thanks to commit c08444b33ff49981cd0a39cced479e2197dc4fd7 we can now
re-enable FreeBSD in the CI.
Each of the 3 CI services now trigger a sr.ht build via
the on_master_success script. The sr.ht build checks if all builds have
completed successfully by trying to download the JSON file for the
particular version. If all builds have completed successfully then this
sr.ht job will update the download page.