bonding: remove unused original_flags struct slave member

This is stored but never restored. So remove this as it is useless.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bonding/bond_main.c

@@ -1535,11 +1535,6 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
 		goto err_undo_flags;
 	}
 
-	/* save slave's original flags before calling
-	 * netdev_set_master and dev_open
-	 */
-	new_slave->original_flags = slave_dev->flags;
-
 	/* Save slave's original mtu and then set it to match the bond */
 	new_slave->original_mtu = slave_dev->mtu;
 	res = dev_set_mtu(slave_dev, bond->dev->mtu);

drivers/net/bonding/bonding.h

@@ -159,7 +159,6 @@ struct slave {
 	s8     link;    /* one of BOND_LINK_XXXX */
 	s8     new_link;
 	s8     state;   /* one of BOND_STATE_XXXX */
-	u32    original_flags;
 	u32    original_mtu;
 	u32    link_failure_count;
 	u8     perm_hwaddr[ETH_ALEN];