ethernet: arc: remove unused dev

Remove unused 'dev' variable from arc_emac_remove(), since it's
not being used any more.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/arc/emac_main.c

@@ -829,7 +829,6 @@ EXPORT_SYMBOL_GPL(arc_emac_probe);
 
 int arc_emac_remove(struct net_device *ndev)
 {
-	struct device *dev = ndev->dev.parent;
 	struct arc_emac_priv *priv = netdev_priv(ndev);
 
 	phy_disconnect(priv->phy_dev);