Bluetooth: Fix memory leak when removing a UUID

When removing a UUID from the list in the remove_uuid() function we must
also kfree the entry in addition to removing it from the list.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>