Remove upgrade status badge in runner list

What does this MR do and why?

Remove upgrade status badge in runner list

Resolves #378557 (closed)

Screenshots or screen recordings

before	after

How to set up and validate locally

Have at least one outdated runner

1. Have at least one runner that needs an upgrade registered (a couple of versions behind)
   • If you use brew to install gitlab-runner, you can use these commands to swap versions, after that run your runner:
   • In my system, I run my old version like this: /usr/local/opt/gitlab-runner@14.10.0/bin/gitlab-runner@14.10.0 run

Check the badge is removed from the runner

1. Have a GitLab Ultimate license
2. Visit Admin -> Runners http://gdk.test:3000/admin/runners
3. Check the badge is not showing
   • Confirm the arrow next to the version is still there, which indicates the upgrade.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #378557 (closed)