'Deletes a DBSnapshot.
The DBSnapshot must be in the `available` state to be deleted.
:type db_snapshot_identifier: string
:param db_snapshot_identifier: The DBSnapshot identifier.
Constraints: Must be the name of an existing DB snapshot in the
`available` state.'

def delete_db_snapshot(self, db_snapshot_identifier):

    params = {'DBSnapshotIdentifier': db_snapshot_identifier}
    return self._make_request(action='DeleteDBSnapshot', verb='POST', path='/', params=params)
