There probably isn't, but if there somehow is it would be a dream come true. Despite my efforts in trying to put a hard ban on all those ridiculous categories, it's been near impossible to get people to pay attention to all this (though how much of it is just that one obsessive IP is unknown to me). A few of us already discussed in a prior thread what categories should and shouldn't be on the wiki.
I'd also love it if there was a way to purge all occurrences of a certain category for a wiki (like numbers with 25 to 42 digits or whatever the hell). Unfortunately, I doubt there is. God, Wikia is such a terrible website.