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/icmp.c b/net/ipv6/icmp.c
index 9a37379..eb9abe2 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -114,7 +114,7 @@
  */
 void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos)
 {
-	icmpv6_send(skb, ICMPV6_PARAMPROB, code, pos, skb->dev);
+	icmpv6_send(skb, ICMPV6_PARAMPROB, code, pos);
 	kfree_skb(skb);
 }
 
@@ -300,8 +300,7 @@
 /*
  *	Send an ICMP message in response to a packet in error
  */
-void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
-		 struct net_device *dev)
+void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
 {
 	struct net *net = dev_net(skb->dev);
 	struct inet6_dev *idev = NULL;