arm64: dts: mt7622: Remove un-used property for PCIe

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

arch/arm64/boot/dts/mediatek/mt7622.dtsi

@@ -812,7 +812,6 @@ pcie0: pcie@0,0 {
 			ranges;
 			status = "disabled";
 
-			num-lanes = <1>;
 			interrupt-map-mask = <0 0 0 7>;
 			interrupt-map = <0 0 0 1 &pcie_intc0 0>,
 					<0 0 0 2 &pcie_intc0 1>,
@@ -833,7 +832,6 @@ pcie1: pcie@1,0 {
 			ranges;
 			status = "disabled";
 
-			num-lanes = <1>;
 			interrupt-map-mask = <0 0 0 7>;
 			interrupt-map = <0 0 0 1 &pcie_intc1 0>,
 					<0 0 0 2 &pcie_intc1 1>,