qlcnic: remove unnecessary setting of skb->dev

skb->dev is being unnecessarily set before calling eth_type_trans.
eth_type_trans already sets skb->dev to the proper value, thus making this
unnecessary.

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Cc: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Cc: Sony Chacko <sony.chacko@qlogic.com>
Cc: linux-driver@qlogic.com
Signed-off-by: David S. Miller <davem@davemloft.net>