[SCSI] remove timeout from struct scsi_device

by removing the unused timeout parameter we ensure a compile failure if
anyone is accidentally still using it rather than the block timeout.
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

include/scsi/scsi_device.h

@@ -159,8 +159,6 @@ struct scsi_device {
 	atomic_t iodone_cnt;
 	atomic_t ioerr_cnt;
 
-	int timeout;
-
 	struct device		sdev_gendev,
 				sdev_dev;