wctc4xxp: Trivial. Remove unused timer_list from struct tcb.

The timer_list member of the transcoder buffer has not been used for a long
time. Saves some space in the buffer in addition to removing any future
curiosity about what it is for.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>

drivers/dahdi/wctc4xxp/base.c

@@ -205,7 +205,6 @@ struct tcb {
 	unsigned long flags;
 	struct tcb *response;
 	struct completion complete;
-	struct timer_list timer;
 	/* The number of bytes available in data. */
 	int data_len;
 	spinlock_t lock;