[NET]: Kill eth_copy_and_sum().

It hasn't "summed" anything in over 7 years, and it's
just a straight mempcy ala skb_copy_to_linear_data()
so just get rid of it.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/fec.c b/drivers/net/fec.c
index 255b091..03023dd 100644
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -648,7 +648,7 @@
 		fep->stats.rx_dropped++;
 	} else {
 		skb_put(skb,pkt_len-4);	/* Make room */
-		eth_copy_and_sum(skb, data, pkt_len-4, 0);
+		skb_copy_to_linear_data(skb, data, pkt_len-4);
 		skb->protocol=eth_type_trans(skb,dev);
 		netif_rx(skb);
 	}