arm64: dts: rockchip: remove clock_in_out from gmac2phy node in rk3318-a95x-z2.dts

Recently a clock_in_out property was added to the gmac2phy node
in rk3328.dtsi, so now the clock_in_out in rk3318-a95x-z2.dts
can be removed.
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20210701144110.12333-1-jbx6244@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3318-a95x-z2.dts

@@ -185,7 +185,6 @@ &gmac2phy {
 	assigned-clock-parents = <&cru SCLK_MAC2PHY_SRC>;
 	assigned-clock-rate = <50000000>;
 	assigned-clocks = <&cru SCLK_MAC2PHY>;
-	clock_in_out = "output";
 	status = "okay";
 };