netfilter: remove prototype of netfilter_queue_init

The netfilter_queue_init() has been removed.
so we can remove the prototype of that.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

net/netfilter/nf_internals.h

@@ -15,7 +15,6 @@
 int nf_queue(struct sk_buff *skb, struct nf_hook_state *state,
 	     struct nf_hook_entry **entryp, unsigned int verdict);
 unsigned int nf_queue_nf_hook_drop(struct net *net);
-int __init netfilter_queue_init(void);
 
 /* nf_log.c */
 int __init netfilter_log_init(void);