net: phy: mscc: remove useless page configuration in the config init

In the middle of vsc8584_config_init and vsc8514_config_init, the page
is set to 'standard'. This is the default value, and the page isn't set
to another value before. Those pages configuration can be safely
removed.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>