[MMC] Remove unused timer.

Remove timer that was left from earlier cleanup.

Signed-off-by: Pierre Ossman <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

drivers/mmc/wbsd.h

···
 	struct tasklet_struct	finish_tasklet;
 	struct tasklet_struct	block_tasklet;
 
-	struct timer_list	detect_timer;	/* Card detection timer */
 	struct timer_list	ignore_timer;	/* Ignore detection timer */
 };