require_once '/PrefManager.php';
bool Auth_PrefManager::deletePref (string $user_id, string $pref_id)
bool Auth_PrefManager::deletePref
Deletes the preference $pref_id for $user_id if one is set.
The userid of the user to delete from.
The preference to delete.
returns Success/Failure
No exceptions thrown.
This function can not be called statically.
