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/addrconf.h b/include/net/addrconf.h
index b5474b1..78003df 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -192,8 +192,7 @@
 	int (*ipv6_dst_lookup)(struct net *net, struct sock *sk,
 			       struct dst_entry **dst, struct flowi6 *fl6);
 	void (*udpv6_encap_enable)(void);
-	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);
 	struct neigh_table *nd_tbl;