scsi: ibmvscsi_tgt: remove use of class_attrs

The class_attrs pointer is going away and it's not even being used in
this driver, so just remove it entirely.
Acked-by: "Bryant G. Ly" <bryantly@linux.vnet.ibm.com>
Cc: Michael Cyr <mikecyr@linux.vnet.ibm.com>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: <linux-scsi@vger.kernel.org>
Cc: <target-devel@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c

@@ -3915,10 +3915,6 @@ static const struct target_core_fabric_ops ibmvscsis_ops = {
 
 static void ibmvscsis_dev_release(struct device *dev) {};
 
-static struct class_attribute ibmvscsis_class_attrs[] = {
-	__ATTR_NULL,
-};
-
 static struct device_attribute dev_attr_system_id =
 	__ATTR(system_id, S_IRUGO, system_id_show, NULL);
 
@@ -3938,7 +3934,6 @@ ATTRIBUTE_GROUPS(ibmvscsis_dev);
 static struct class ibmvscsis_class = {
 	.name		= "ibmvscsis",
 	.dev_release	= ibmvscsis_dev_release,
-	.class_attrs	= ibmvscsis_class_attrs,
 	.dev_groups	= ibmvscsis_dev_groups,
 };