Remove Subscribers from Youtube channel

1. Go to your Inbox => Address Book => Click Subscribers.
2. Your Subscribers page will be showed.
3. Click on Subscriber you want to remove.
4. On Subscriber's channel, click Block User => Click OK on confirm dialog.
5. Return back to Your Subscribers page, remove other Subscriber sequentially.
6. If Subscriber's channel was deleted/terminated, Go to Address Book => Add a new Contact with Username is Subscriber's username (from http://www.youtube.com/user/username)
7. After block all Subscribers, Go to Address Book => All Contacts => select contacts to block => click Block.
8. Go to Blocked Users => select all Contacts => click Delete until no Blocked User.