tg3: Remove unused link config code

When tg3 devices are shutdown, the driver uses the
TG3_PHYFLG_IS_LOW_POWER flag to enable a static phy configuration.
Any attempt to use the link configuration variables is dead code.  This
patch removes such code.
Signed-off-by: NMatt Carlson <mcarlson@broadcom.com>
Reviewed-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/tg3.c

@@ -3607,13 +3607,9 @@ static int tg3_power_down_prepare(struct tg3 *tp)
 			tp->link_config.orig_autoneg = tp->link_config.autoneg;
 		}
 
-		if (!(tp->phy_flags & TG3_PHYFLG_ANY_SERDES)) {
-			tp->link_config.speed = SPEED_10;
-			tp->link_config.duplex = DUPLEX_HALF;
-			tp->link_config.autoneg = AUTONEG_ENABLE;
+		if (!(tp->phy_flags & TG3_PHYFLG_ANY_SERDES))
 			tg3_setup_phy(tp, 0);
 	}
-	}
 
 	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
 		u32 val;