[SCSI] qla2xxx: Remove unused member (list) from srb_t structure.

This change reduces by as much as 16% the memory footprint for
each allocated sbr_t structure requested from the mempool.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/qla2xxx/qla_def.h

@@ -185,8 +185,6 @@
  * SCSI Request Block
  */
 typedef struct srb {
-	struct list_head list;
-
 	struct scsi_qla_host *ha;	/* HA the SP is queued on */
 	struct fc_port *fcport;