igb: remove LRO Kconfig option

To match ixgbe GRO functionality, we remove the LRO (which is now GRO)
Kconfig option which enables GRO by default.
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/Kconfig

@@ -2019,14 +2019,6 @@ config IGB
          To compile this driver as a module, choose M here. The module
          will be called igb.
 
-config IGB_LRO 
-	bool "Use software LRO"
-	depends on IGB && INET
-	---help---
-	  Say Y here if you want to use large receive offload. 
-
-	  If in doubt, say N.
-
 config IGB_DCA
 	bool "Direct Cache Access (DCA) Support"
 	default y

drivers/net/igb/igb_main.c

@@ -1248,9 +1248,7 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 	netdev->features |= NETIF_F_TSO;
 	netdev->features |= NETIF_F_TSO6;
 
-#ifdef CONFIG_IGB_LRO
 	netdev->features |= NETIF_F_GRO;
-#endif
 
 	netdev->vlan_features |= NETIF_F_TSO;
 	netdev->vlan_features |= NETIF_F_TSO6;