econet: kill unnecessary spin_lock_init()

The spinlock aun_queue_lock is initialized statically. It is unnecessary
to initialize by spin_lock_init() at module load time.

This is detected by the semantic patch.

// <smpl>
@def@
declarer name DEFINE_SPINLOCK;
identifier spinlock;
@@

DEFINE_SPINLOCK(spinlock);

@@
identifier def.spinlock;
@@

- spin_lock_init(&spinlock);
// </smpl>

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Julia Lawall <julia@diku.dk>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

net/econet/af_econet.c

@@ -1009,7 +1009,6 @@ static int __init aun_udp_initialise(void)
 	struct sockaddr_in sin;
 
 	skb_queue_head_init(&aun_queue);
-	spin_lock_init(&aun_queue_lock);
 	setup_timer(&ab_cleanup_timer, ab_cleanup, 0);
 	ab_cleanup_timer.expires = jiffies + (HZ*2);
 	add_timer(&ab_cleanup_timer);
@@ -1167,7 +1166,6 @@ static int __init econet_proto_init(void)
 		goto out;
 	sock_register(&econet_family_ops);
 #ifdef CONFIG_ECONET_AUNUDP
-	spin_lock_init(&aun_queue_lock);
 	aun_udp_initialise();
 #endif
 #ifdef CONFIG_ECONET_NATIVE