sungem: remove unnecessary setting of skb->dev

skb->dev is being unnecessarily set by the driver's skb alloc routine (which is
called in init and during rx).  It is already being set to the proper value when
eth_type_trans is called on packet receive, and the skb->dev is not referenced
anywhere else in the code.
Signed-off-by: NJon Mason <jdmason@kudzu.us>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/sun/sungem.c

@@ -752,7 +752,6 @@ static __inline__ struct sk_buff *gem_alloc_skb(struct net_device *dev, int size
 	if (likely(skb)) {
 		unsigned long offset = ALIGNED_RX_SKB_ADDR(skb->data);
 		skb_reserve(skb, offset);
-		skb->dev = dev;
 	}
 	return skb;
 }