scsi: sas: remove is_sas_attached()

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>

drivers/scsi/scsi_transport_sas.c

@@ -340,22 +340,6 @@ static int do_sas_phy_delete(struct device *dev, void *data)
 	return 0;
 }
 
-/**
- * is_sas_attached - check if device is SAS attached
- * @sdev: scsi device to check
- *
- * returns true if the device is SAS attached
- */
-int is_sas_attached(struct scsi_device *sdev)
-{
-	struct Scsi_Host *shost = sdev->host;
-
-	return shost->transportt->host_attrs.ac.class ==
-		&sas_host_class.class;
-}
-EXPORT_SYMBOL(is_sas_attached);
-
-
 /**
  * sas_remove_children  -  tear down a devices SAS data structures
  * @dev:	device belonging to the sas object

include/scsi/scsi_transport_sas.h

@@ -11,17 +11,11 @@ struct sas_rphy;
 struct request;
 
 #if !IS_ENABLED(CONFIG_SCSI_SAS_ATTRS)
-static inline int is_sas_attached(struct scsi_device *sdev)
-{
-	return 0;
-}
-
 static inline int scsi_is_sas_rphy(const struct device *sdev)
 {
 	return 0;
 }
 #else
-extern int is_sas_attached(struct scsi_device *sdev);
 extern int scsi_is_sas_rphy(const struct device *);
 #endif