ARM: dts: pxa2xx: drop #address-cells and #size-cells from /cpus

PXA is single-core only, so this node will not have enumerable children.
Drop the #address-cells and #size-cells properties to squelch a dtc warning.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>

arch/arm/boot/dts/pxa2xx.dtsi

@@ -43,8 +43,6 @@ aliases {
 	};
 
 	cpus {
-		#address-cells = <0>;
-		#size-cells = <0>;
 		cpu {
 			compatible = "marvell,xscale";
 			device_type = "cpu";