[PATCH] devfs: Remove the gendisk devfs_name field as it's no longer needed

And remove the now unneeded number field.
Also fixes all drivers that set these fields.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/cdrom/aztcd.c

@@ -1918,7 +1918,6 @@ static int __init aztcd_init(void)
 	azt_disk->first_minor = 0;
 	azt_disk->fops = &azt_fops;
 	sprintf(azt_disk->disk_name, "aztcd");
-	sprintf(azt_disk->devfs_name, "aztcd");
 	azt_disk->queue = azt_queue;
 	add_disk(azt_disk);
 	azt_invalidate_buffers();