I think it's the same enterprise & non-enterprise:
0. Backup any address books you want to keep
1. Highlight the doomed book in "Open Address Book." Note the "Location of Address Book."
2. "Remove" the address book from the list it's in ("Local List" or "Global List").
3. Go to the location (from step 1) and delete the files and/or folder. Be careful if the address book is in the same folder as another address book (in that case, you might have to use your backup from step 0).