arm64: dts: imx8mm: Drop QCA clk out setup on Data Modul i.MX8M Mini eDM SBC

The PHY clock output is not connected to anything, drop the clock output
configuration. This way, the PHY does not generate output clock.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc.dts

@@ -189,8 +189,6 @@ fec1_phy: ethernet-phy@0 {
 			reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
 			reset-assert-us = <10000>;
 			reset-deassert-us = <10000>;
-			qca,clk-out-frequency = <125000000>;
-			qca,clk-out-strength = <AR803X_STRENGTH_FULL>;
 			qca,keep-pll-enabled;
 			vddio-supply = <&vddio>;