We had Groestl and Evergreen listed from day 1 in our systems, but had no response at all from any holders on using our services for them.

We also listed Cloak a year ago and the only movement it had was our test deposits and withdrawals.

We cancelled a couple of trade orders on the exchange that were going nowhere since there were no holders in our wallets.

So they're disabled now and queried for deletion. No harm is done.