[NETLINK]: Remove unused groups member from struct netlink_skb_parms

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/netlink.h

@@ -106,7 +106,6 @@ struct netlink_skb_parms
 {
 	struct ucred		creds;		/* Skb credentials	*/
 	__u32			pid;
-	__u32			groups;
 	__u32			dst_pid;
 	__u32			dst_groups;
 	kernel_cap_t		eff_cap;

net/ipv4/fib_frontend.c

@@ -558,7 +558,6 @@ static void nl_fib_input(struct sock *sk, int len)
 	nl_fib_lookup(frn, tb);
 	
 	pid = nlh->nlmsg_pid;           /*pid of sending process */
-	NETLINK_CB(skb).groups = 0;     /* not in mcast group */
 	NETLINK_CB(skb).pid = 0;         /* from kernel */
 	NETLINK_CB(skb).dst_pid = pid;
 	NETLINK_CB(skb).dst_groups = 0;  /* unicast */

net/netlink/af_netlink.c

@@ -950,7 +950,6 @@ static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
 		goto out;
 
 	NETLINK_CB(skb).pid	= nlk->pid;
-	NETLINK_CB(skb).groups	= nlk->groups;
 	NETLINK_CB(skb).dst_pid = dst_pid;
 	NETLINK_CB(skb).dst_groups = dst_groups;
 	NETLINK_CB(skb).loginuid = audit_get_loginuid(current->audit_context);