Removing specified SR-record from database, without attempting to remove SR from disk

Parameters
name	type	description
session_id	session	valid session reference
sr	SR	The SR to destroy
Errors
name	arguments	description
SR_HAS_PBD	sr	The SR is still connected to a host via a PBD. It cannot be destroyed.

• Message has both a synchronous and asynchronous version
• This is a custom message