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.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>