If you uninstalled LX properly, then you wouldn't have any skins left on your handheld now would you?
If you used Uninstall Manager or similar product, I should have removed all skins.
He didn't say he had removed LX already either did he?
If you don't have LX installed anymore, the skins should still show up using FileZ or similar file management application and you should be able to remove them using the file manager.
If your too cheap use Filez or believe it or not, you can use in the built-in palm app launcher, tap the menu silk screen, tap [Delete] from the drop-down menu, now look for the 'Skin' in the LXOS5XXXX format and delete...
Pretty simple right? If not perhaps its time to 'bone-up' on the basic functions of your handheld.