Deletes a subscription.

C# |
public UnsubscribeResponse Unsubscribe( UnsubscribeRequest request )

- request (UnsubscribeRequest)
- Unsubscribe request

Unsubscribe Response from the service

If the subscription requires authentication for deletion, only the owner
of the subscription or the its topic's owner can unsubscribe, and an AWS
signature is required.
If the Unsubscribe call does not require authentication and the requester is not
the subscription owner, a final cancellation message is delivered to the
endpoint, so that the endpoint owner can easily resubscribe to the topic if
the Unsubscribe request was unintended.