ipv6: drop unused "dev" arg of icmpv6_send()

Dunno, what was the idea, it wasn't used for a long time.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 8500156..88c0a5c 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -909,7 +909,7 @@
 {
 	struct rt6_info *rt;
 
-	icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_ADDR_UNREACH, 0, skb->dev);
+	icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_ADDR_UNREACH, 0);
 
 	rt = (struct rt6_info *) skb_dst(skb);
 	if (rt) {
@@ -1884,7 +1884,7 @@
 			      ipstats_mib_noroutes);
 		break;
 	}
-	icmpv6_send(skb, ICMPV6_DEST_UNREACH, code, 0, skb->dev);
+	icmpv6_send(skb, ICMPV6_DEST_UNREACH, code, 0);
 	kfree_skb(skb);
 	return 0;
 }