As there are no more users of is_sas_attached() left, remove it.
Signed-off-by: NJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: NJames E.J. Bottomley <jejb@linux.vnet.ibm.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>