netfilter: ipt_CLUSTERIP: remove "no conntrack!"

When a packet is meant to be handled by another node of the cluster,
silently drop it instead of flooding kernel log.

Note : INVALID packets are also dropped without notice.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>

net/ipv4/netfilter/ipt_CLUSTERIP.c

@@ -300,13 +300,8 @@ clusterip_tg(struct sk_buff *skb, const struct xt_action_param *par)
 	 * that the ->target() function isn't called after ->destroy() */
 
 	ct = nf_ct_get(skb, &ctinfo);
-	if (ct == NULL) {
-		pr_info("no conntrack!\n");
-			/* FIXME: need to drop invalid ones, since replies
-			 * to outgoing connections of other nodes will be
-			 * marked as INVALID */
+	if (ct == NULL)
 		return NF_DROP;
-	}
 
 	/* special case: ICMP error handling. conntrack distinguishes between
 	 * error messages (RELATED) and information requests (see below) */