sock: remove skb argument from sk_rcvqueues_full

It hasn't been used since commit 0fd7bac(net: relax rcvbuf limits).

Signed-off-by: Sorin Dumitru <sorin@returnze.ro>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index f31053b..f57c0e4 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1567,7 +1567,7 @@
 		goto csum_error;
 
 
-	if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf)) {
+	if (sk_rcvqueues_full(sk, sk->sk_rcvbuf)) {
 		UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_RCVBUFERRORS,
 				 is_udplite);
 		goto drop;