arm: dts: mt7623: Remove un-used property for PCIe

The "num-lanes" property for PCIe is not used, remove it.
Signed-off-by: NHonghui Zhang <honghui.zhang@mediatek.com>
Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>

arch/arm/boot/dts/mt7623.dtsi

@@ -850,7 +850,6 @@ pcie@0,0 {
 			interrupt-map-mask = <0 0 0 0>;
 			interrupt-map = <0 0 0 0 &sysirq GIC_SPI 193 IRQ_TYPE_LEVEL_LOW>;
 			ranges;
-			num-lanes = <1>;
 			status = "disabled";
 		};
 
@@ -862,7 +861,6 @@ pcie@1,0 {
 			interrupt-map-mask = <0 0 0 0>;
 			interrupt-map = <0 0 0 0 &sysirq GIC_SPI 194 IRQ_TYPE_LEVEL_LOW>;
 			ranges;
-			num-lanes = <1>;
 			status = "disabled";
 		};
 
@@ -874,7 +872,6 @@ pcie@2,0 {
 			interrupt-map-mask = <0 0 0 0>;
 			interrupt-map = <0 0 0 0 &sysirq GIC_SPI 195 IRQ_TYPE_LEVEL_LOW>;
 			ranges;
-			num-lanes = <1>;
 			status = "disabled";
 		};
 	};