Remove commit author radios in the "Credit & committing" section.

I’m not aware of any change in GitLab, so we should take the opportunity to simplify our UI and remove the false promise of setting the author for a merge

I think this is ready for review.

MR: https://git.drupalcode.org/project/drupalorg/-/merge_requests/230/diffs
Test link: https://fjgarlin-drupal.dev.devdrupal.org/project/drupalorg/issues/33161...

Added one comment. For the rest I think removing is the best option here.

Tagging for IS update as the title isn't clear what we're going to do.

Addressed the feedback in the MR.

Also attempted to update the IS.

This is now deployed.

Cool thanks! Can confirm the author is gone now 😇

Automatically closed - issue fixed for 2 weeks with no activity.

I've recently missed this data. Wondering if the "no-reply" email could appear maybe on the user profile for those that want to still handle this manually.