phylib: remove unused adjust_state() callback

Remove adjust_state() callback from 'struct phy_device' since it seems to have
never been really used from the inception: phy_start_machine() has been always
called with 2nd argument equal to NULL.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 1f1f8d7..09aa9e5 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -422,7 +422,7 @@
 		return rc;
 
 	phy_prepare_link(phydev, handler);
-	phy_start_machine(phydev, NULL);
+	phy_start_machine(phydev);
 	if (phydev->irq > 0)
 		phy_start_interrupts(phydev);