How to remove your library from the web
To remove your .me published library, you'll need to mount your iDisk and delete it through there.
To remove your published library from the web:
Press Shift+Command+i to access your iDisk.
Go to Web > Sites.
Select everything you want to delete (all Delicious Library 2 files start with the type-collection then an underscore (ie. Book_3, Gadgets_2, etc.)
Press and they'll be removed from your online library. To remove all of them just select them all (making sure you don't have anything else published that you want to keep that's unrelated to Delicious Library 2) and press
.