You'll want to listen to the filter:categories.build hook. You can remove all of the code creating the route override.
There's an ongoing issue right now with plugins not being "ajaxified" in the admin panel. "Ajaxifying" is our pet name for our shorthand method that loads pages in NodeBB (since it is a one-page application, it doesn't truly do a page reload when you click links).
Give it a try, if you'd like:
- Open up your console (hit F12), and navigate to the console tab, if it is not open already
- Type in
Also, it looks like I found a bug with the Skype Emoji -- darnit.