just delete them.
to resolve your problem, first try resetting your flash preferences:
Hold down Shift+Ctrl+Alt (Win) or Shift+Command+Option (Mac) prior to launching Flash Professional. If this interferes with an OS dialog, hold this keyboard combination immediately after launching Flash until you see the prompt to reset preferences.
if that fails, try reinstalling flash over your current installation.
if that fails, uninstall flash, run the cleaner (http://www.adobe.com/support/contact/cscleanertool.html), restart your computer and then install flash.