inet: frag , remove an empty ifdef.

This patch removes an empty ifdef from inet_frag_intern()
in net/ipv4/inet_fragment.c.

commit b67bfe0d
(hlist: drop the node parameter from iterators) removed hlist from
net/ipv4/inet_fragment.c, but did not remove the enclosing ifdef command,
which is now empty.
Signed-off-by: NRami Rosen <ramirose@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/inet_fragment.c

@@ -247,8 +247,6 @@ static struct inet_frag_queue *inet_frag_intern(struct netns_frags *nf,
 {
 	struct inet_frag_bucket *hb;
 	struct inet_frag_queue *qp;
-#ifdef CONFIG_SMP
-#endif
 	unsigned int hash;
 
 	read_lock(&f->lock); /* Protects against hash rebuild */