ipv4: Delete redundant sk_family assignment

sk_alloc now sets sk_family so this is redundant.  In fact it caught
my eye because sock_init_data already uses sk_family so this is too
late anyway.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/af_inet.c

@@ -369,7 +369,6 @@ static int inet_create(struct net *net, struct socket *sock, int protocol)
 	sock_init_data(sock, sk);
 
 	sk->sk_destruct	   = inet_sock_destruct;
-	sk->sk_family	   = PF_INET;
 	sk->sk_protocol	   = protocol;
 	sk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;