openvswitch: Revert: "Enable memory mapped Netlink i/o"

revert commit 795449d8b846 ("openvswitch: Enable memory mapped Netlink i/o").
Following the mmaped netlink removal this code can be removed.

Signed-off-by: Florian Westphal <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/openvswitch/datapath.c

···
 	struct sk_buff *nskb = NULL;
 	struct sk_buff *user_skb = NULL; /* to be queued to userspace */
 	struct nlattr *nla;
-	struct genl_info info = {
-		.dst_sk = ovs_dp_get_net(dp)->genl_sock,
-		.snd_portid = upcall_info->portid,
-	};
 	size_t len;
 	unsigned int hlen;
 	int err, dp_ifindex;
···
 		hlen = skb->len;
 
 	len = upcall_msg_size(upcall_info, hlen);
-	user_skb = genlmsg_new_unicast(len, &info, GFP_ATOMIC);
+	user_skb = genlmsg_new(len, GFP_ATOMIC);
 	if (!user_skb) {
 		err = -ENOMEM;
 		goto out;
···
 		return NULL;
 
 	len = ovs_flow_cmd_msg_size(acts, sfid, ufid_flags);
-	skb = genlmsg_new_unicast(len, info, GFP_KERNEL);
+	skb = genlmsg_new(len, GFP_KERNEL);
 	if (!skb)
 		return ERR_PTR(-ENOMEM);
 
···
 
 static struct sk_buff *ovs_dp_cmd_alloc_info(struct genl_info *info)
 {
-	return genlmsg_new_unicast(ovs_dp_cmd_msg_size(), info, GFP_KERNEL);
+	return genlmsg_new(ovs_dp_cmd_msg_size(), GFP_KERNEL);
 }
 
 /* Called with rcu_read_lock or ovs_mutex. */