[SCSI] git-scsi-misc: drivers/scsi/ch.c: remove devfs stuff

It seems very unlikely that this driver will go into any stable kernel
before devfs will be removed.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>