Queues never go away?

I renamed my queues, but the old names continue to show in the Hangfire dashboard. It's been weeks now and I'd love to clean this up.

How do I remove a queue name that is no longer used?

The issue names only the Hangfire dashboard and queue names, with no source file or test to start from. Trace how queue names are stored and displayed in the dashboard, then document the supported way to remove an unused name, if one exists, and verify the result in the dashboard.

Written by the indexing model from the issue text.