ipv6: remove unused neigh parameter from ndisc functions

Since commit 12fd84f4383b1 ("ipv6: Remove unused neigh argument for
icmp6_dst_alloc() and its callers."), the neigh parameter of ndisc_send_na
and ndisc_send_ns is unused.

CC: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ndisc.h b/include/net/ndisc.h
index aba5695..bf39374 100644
--- a/include/net/ndisc.h
+++ b/include/net/ndisc.h
@@ -180,15 +180,13 @@
 
 int ndisc_rcv(struct sk_buff *skb);
 
-void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh,
-		   const struct in6_addr *solicit,
+void ndisc_send_ns(struct net_device *dev, const struct in6_addr *solicit,
 		   const struct in6_addr *daddr, const struct in6_addr *saddr,
 		   struct sk_buff *oskb);
 
 void ndisc_send_rs(struct net_device *dev,
 		   const struct in6_addr *saddr, const struct in6_addr *daddr);
-void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
-		   const struct in6_addr *daddr,
+void ndisc_send_na(struct net_device *dev, const struct in6_addr *daddr,
 		   const struct in6_addr *solicited_addr,
 		   bool router, bool solicited, bool override, bool inc_opt);