Revert "scsi: qla2xxx: Fix memcpy() field-spanning write issue"

This reverts commit 6f4b1022.

We've been testing this patch and it turns out there is a significant
bug here. This leaks memory and causes a driver hang.

Link: https://lore.kernel.org/linux-scsi/yq1zfajqpec.fsf@ca-mkp.ca.oracle.com/


Signed-off-by: John Meneghini <jmeneghi@redhat.com>
Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>