Small change as a step towards T6560.
Please note any concerns you may have with this as it may serve as a base for how other KoIDs should be extracted. The plan is to make it easier to locate, use, and reason about existing KoIDs.
I don't have to remove these, but if you want to add or remove a category it's one more step you have to do.
This and the corresponding cpp file is the real change.
Apparently we don't have any filters in this category?
Nope. There may have been in the past, I guess?
I guess we might just as well remove the categories that aren't used.