[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/fealnx.c b/drivers/net/fealnx.c
index abe9b08..ff9f177 100644
--- a/drivers/net/fealnx.c
+++ b/drivers/net/fealnx.c
@@ -1727,8 +1727,8 @@
 				/* Call copy + cksum if available. */
 
 #if ! defined(__alpha__)
-				eth_copy_and_sum(skb,
-					np->cur_rx->skbuff->data, pkt_len, 0);
+				skb_copy_to_linear_data(skb,
+					np->cur_rx->skbuff->data, pkt_len);
 				skb_put(skb, pkt_len);
 #else
 				memcpy(skb_put(skb, pkt_len),