net: Remove iocb argument from sendmsg and recvmsg

After TIPC doesn't depend on iocb argument in its internal
implementations of sendmsg() and recvmsg() hooks defined in proto
structure, no any user is using iocb argument in them at all now.
Then we can drop the redundant iocb argument completely from kinds of
implementations of both sendmsg() and recvmsg() in the entire
networking stack.

Cc: Christoph Hellwig <hch@lst.de>
Suggested-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index ca049a7..330c1f4 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1432,8 +1432,7 @@
 	return err;
 }
 
-static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
-			struct msghdr *msg, size_t len)
+static int ax25_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
 {
 	DECLARE_SOCKADDR(struct sockaddr_ax25 *, usax, msg->msg_name);
 	struct sock *sk = sock->sk;
@@ -1599,8 +1598,8 @@
 	return err;
 }
 
-static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
-	struct msghdr *msg, size_t size, int flags)
+static int ax25_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
+			int flags)
 {
 	struct sock *sk = sock->sk;
 	struct sk_buff *skb;