md: raid0: remove setting of segment boundary.

This setting doesn't seem to make sense (half the chunk size??) and
shouldn't be needed.
The segment boundary exported by raid0 should simply be the minimum
of the segment boundary of all component devices.  And we already
get that right.
Signed-off-by: NeilBrown <neilb@suse.de>

drivers/md/raid0.c

@@ -261,12 +261,7 @@ static int raid0_run(mddev_t *mddev)
 		printk(KERN_ERR "md/raid0: non-zero chunk size required.\n");
 		return -EINVAL;
 	}
-	printk(KERN_INFO "%s: setting max_sectors to %d, segment boundary to %d\n",
-	       mdname(mddev),
-	       mddev->chunk_size >> 9,
-	       (mddev->chunk_size>>1)-1);
 	blk_queue_max_sectors(mddev->queue, mddev->chunk_size >> 9);
-	blk_queue_segment_boundary(mddev->queue, (mddev->chunk_size>>1) - 1);
 	mddev->queue->queue_lock = &mddev->queue->__queue_lock;
 
 	ret = create_strip_zones(mddev);