ethtool: remove phys_id from ethtool_ops

After that all the upstream kernel drivers now use phys_id,
and the old ethtool_ops interface (phys_id) can be removed.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index d8b1a8d8..927819d 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -1655,7 +1655,7 @@
 	static bool busy;
 	int rc;
 
-	if (!dev->ethtool_ops->set_phys_id && !dev->ethtool_ops->phys_id)
+	if (!dev->ethtool_ops->set_phys_id)
 		return -EOPNOTSUPP;
 
 	if (busy)
@@ -1664,10 +1664,6 @@
 	if (copy_from_user(&id, useraddr, sizeof(id)))
 		return -EFAULT;
 
-	if (!dev->ethtool_ops->set_phys_id)
-		/* Do it the old way */
-		return dev->ethtool_ops->phys_id(dev, id.data);
-
 	rc = dev->ethtool_ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
 	if (rc < 0)
 		return rc;