[NETFILTER]: nf_conntrack_sctp: remove unused ttag field from conntrack data

Spotted by Pablo Neira Ayuso <pablo@netfilter.org>.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/netfilter/nf_conntrack_sctp.h

@@ -21,7 +21,6 @@ struct ip_ct_sctp
 	enum sctp_conntrack state;
 
 	__be32 vtag[IP_CT_DIR_MAX];
-	u_int32_t ttag[IP_CT_DIR_MAX];
 };
 
 #endif /* _NF_CONNTRACK_SCTP_H */