net: miiphybb: Drop bb_miiphy_buses and bb_miiphy_buses_num

Neither bb_miiphy_buses nor bb_miiphy_buses_num are used anymore.
Drop both of them.

Reviewed-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/board/gdsys/a38x/ihs_phys.c b/board/gdsys/a38x/ihs_phys.c
index 71c9398..0c68087 100644
--- a/board/gdsys/a38x/ihs_phys.c
+++ b/board/gdsys/a38x/ihs_phys.c
@@ -289,7 +289,7 @@
 	uint bus_idx;
 
 	/* there are up to four octo-phys on each mdio bus */
-	for (bus_idx = 0; bus_idx < bb_miiphy_buses_num; ++bus_idx) {
+	for (bus_idx = 0; bus_idx < ARRAY_SIZE(gpio_mii_set); ++bus_idx) {
 		uint m;
 		uint octo_index = bus_idx * 4;
 		struct mii_dev *bus = NULL;
@@ -325,35 +325,3 @@
 
 	return 0;
 }
-
-struct bb_miiphy_bus bb_miiphy_buses[] = {
-	{
-		.mdio_active = mii_mdio_active,
-		.mdio_tristate = mii_mdio_tristate,
-		.set_mdio = mii_set_mdio,
-		.get_mdio = mii_get_mdio,
-		.set_mdc = mii_set_mdc,
-		.delay = mii_delay,
-		.priv = &gpio_mii_set[0],
-	},
-	{
-		.mdio_active = mii_mdio_active,
-		.mdio_tristate = mii_mdio_tristate,
-		.set_mdio = mii_set_mdio,
-		.get_mdio = mii_get_mdio,
-		.set_mdc = mii_set_mdc,
-		.delay = mii_delay,
-		.priv = &gpio_mii_set[1],
-	},
-	{
-		.mdio_active = mii_mdio_active,
-		.mdio_tristate = mii_mdio_tristate,
-		.set_mdio = mii_set_mdio,
-		.get_mdio = mii_get_mdio,
-		.set_mdc = mii_set_mdc,
-		.delay = mii_delay,
-		.priv = &gpio_mii_set[2],
-	},
-};
-
-int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses);