arm64: dts: imx8dxl: drop clocks from scu clock controller

The clocks and clock-names are not documented and not used, drop them.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8dxl.dtsi

@@ -130,8 +130,6 @@ pd: power-controller {
 		clk: clock-controller {
 			compatible = "fsl,imx8dxl-clk", "fsl,scu-clk";
 			#clock-cells = <2>;
-			clocks = <&xtal32k &xtal24m>;
-			clock-names = "xtal_32KHz", "xtal_24Mhz";
 		};
 
 		scu_gpio: gpio {