Remove superfluous NOTIFY_COOKIE_LEN define

NOTIFY_COOKIE_LEN is defined in mqueue.h as well as mqueue.c
This patch removes redundant definition from mqueue.c

Signed-off-by: Michal Wronski <[e-mail]>
Signed-Off-By: Manfred Spraul <[e-mail]>
Signed-off-by: Adrian Bunk <[e-mail]>

ipc/mqueue.c

···
 #define HARD_MSGMAX 	(131072/sizeof(void*))
 #define DFLT_MSGSIZEMAX 8192	/* max message size */
 
-#define NOTIFY_COOKIE_LEN	32
 
 struct ext_wait_queue {		/* queue of sleeping tasks */
 	struct task_struct *task;