Remove bullseye images for gitaly and gitlab

What does this MR do and why?

With Also install Go 1.22 (!771 - merged) we hit up against the 200 job limit:

And so this MR aims to reduce the existing number of images we're producing to unblock it.

Checklist

• (If applicable) Add patches if required for upgrading Ruby version in https://gitlab.com/gitlab-org/gitlab-build-images/-/tree/master/patches/ruby.