net: fec: remove workaround to restart phylib state machine on MDIO timeout

There's a workaround to restart the phylib state machine in case of a
MDIO access timeout. Seems it was introduced to deal with the
consequences of a too small MDIO timeout. See also commit message of
c3b084c24c ("net: fec: Adjust ENET MDIO timeouts") which increased
the timeout value later. Due to the later timeout value fix it seems
to be safe to remove the workaround.

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

drivers/net/ethernet/freescale/fec.h

@@ -531,7 +531,6 @@ struct fec_enet_private {
 
 	/* Phylib and MDIO interface */
 	struct	mii_bus *mii_bus;
-	int	mii_timeout;
 	uint	phy_speed;
 	phy_interface_t	phy_interface;
 	struct device_node *phy_node;