[elizmike]

As long as you have the correct permissions, and have 'show hidden files' checked in your settings, you can just click the .svn folder and hit 'delete' and FlashFXP will recurse through the .svn root and delete everything.

Personally i think messing with svn should be done properly through the terminal. (infact as a last resort if these are old stale svn trees you could write a one line terminal command to recurse and wipe .svn folders for you)