gitaly: Remove Ruby from image (!671) · Merge requests · GitLab.org / gitlab-build-images · GitLab

What does this MR do and why?

The ruby sidecar is shut down, so we can remove Ruby from the Gitaly images.

Issue: gitaly#4636 (closed)

Checklist

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