Airfliyer

This is the first time I upload. I recently uploaded my PBY Catalina (STOCK) and it said Errors. I couldn't figure out what it was so I kept retrying the upload button. Eventually I decided to check my Addons page and that's when I realized I uploaded 10 files of the same craft. I tried to delete them but nothing. I need help deleting them all except this one http://kerbalspaceprogram.com/pby-katalina-stock/. I'm sorry for this mess.