claw: removal of volatile variables

Volatile variables queme_switch and pk_delay are not used anyway.
They are just a left over from an unused timer based packing logic.
Signed-off-by: NUrsula Braun <braunu@de.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/s390/net/claw.h

@@ -278,8 +278,6 @@ struct claw_env {
         __u16                   write_size;     /* write buffer size */
         __u16                   dev_id;         /* device ident */
 	__u8			packing;	/* are we packing? */
-	volatile __u8		queme_switch;   /* gate for imed packing  */
-	volatile unsigned long	pk_delay;	/* Delay for adaptive packing */
         __u8                    in_use;         /* device active flag */
         struct net_device       *ndev;    	/* backward ptr to the net dev*/
 };