e1000e: fail when try to setup unsupported features

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/e1000e/ethtool.c

@@ -2051,7 +2051,6 @@ static const struct ethtool_ops e1000_ethtool_ops = {
 	.get_coalesce		= e1000_get_coalesce,
 	.set_coalesce		= e1000_set_coalesce,
 	.get_flags		= ethtool_op_get_flags,
-	.set_flags		= ethtool_op_set_flags,
 };
 
 void e1000e_set_ethtool_ops(struct net_device *netdev)