Oh sorry I kinda forget pedprops was only the hats and stuff, I was under the impression it was all saved under the same file (the clothes + the accessoiries).
Now I know what you mean, you could try just deleting the files alltogether (using OpenIV). I'm not sure if that would work but technically it should, just delete both the .wdd and the .wtd file that goes with it.
Make a back-up of those files before you do it though, just to be sure
If it doesn't work let me know, I'll try to make an empty .wdd file for ya if that's possible