Remove outdated template tags in the Tool admin list.
Review Request #12889 — Created March 14, 2023 and submitted
The Tool admin list page made use of some template tags that have since
been removed in Django. We had a compatibility shim to ensure these
would work, but as this has broken in production and we don't actually
need to use these template tags anymore, this change removes the usage
Tested that the page loads correctly now with Review Board 5.
Verified the template didn't make use of these tags.