scsi: qla2xxx: Fix NPIV handling for FC-NVMe

This patch fixes issues with NPIV port with FC-NVMe. Clean up code for
remoteport delete and also call nvme_delete when deleting VPs.

Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>