scsi: target: srp, vscsi, sbp, qla: use target_remove_session

This converts the drivers that called transport_deregister_session_configfs
and then immediately called transport_deregister_session to use
target_remove_session.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Chris Boot <bootc@bootc.net>
Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Cc: Michael Cyr <mikecyr@linux.vnet.ibm.com>
Cc: <qla2xxx-upstream@qlogic.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c

@@ -2267,8 +2267,7 @@ static int ibmvscsis_drop_nexus(struct ibmvscsis_tport *tport)
 	 * Release the SCSI I_T Nexus to the emulated ibmvscsis Target Port
 	 */
 	target_wait_for_sess_cmds(se_sess);
-	transport_deregister_session_configfs(se_sess);
-	transport_deregister_session(se_sess);
+	target_remove_session(se_sess);
 	tport->ibmv_nexus = NULL;
 	kfree(nexus);