PP Beta Question

After I downloaded the Beta Version of PP, I went to the image folder to delete those pesky Sidebet and Blackjack icons. However, after I deleted them, I received an error message after logging into Party stating that a file was missing, and I had to reinstall. However, when I went to my trash bin and restored the BJ and Sidebet icons, Party again worked perfectly. Can one of you computer geniuses figure out how to delete the icons and still have PP work? Thanks.