[SCSI] hosts.c: removed one unneeded shost->active_mode assignment

In the following if/else statement, shost->active_mode will always be set,
so this assignment is unneeded.
Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/hosts.c

@@ -347,7 +347,6 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
 	shost->unchecked_isa_dma = sht->unchecked_isa_dma;
 	shost->use_clustering = sht->use_clustering;
 	shost->ordered_tag = sht->ordered_tag;
-	shost->active_mode = sht->supported_mode;
 
 	if (sht->supported_mode == MODE_UNKNOWN)
 		/* means we didn't set it ... default to INITIATOR */