Zoho Campaigns - delete/remove unsubscribers from do-not-mail list

Zoho Campaigns - delete/remove unsubscribers from do-not-mail list

According to new GDPR regulations, we have to immediately remove/delete unsubscribers data from system. Now, we can't, because when somebody click unsubscribe, it is move to do-not-mail list and we can't delete this data. Unsubscribers data storage is strictly forbidden by law. When you fix it?