net: phy: remove unused code in phy_probe

3c1bcc86

 ("net: ethernet: Convert phydev advertize and supported
from u32 to link mode") left some unused code in phy_probe(), remove it.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>