arm64: dts: marvell: uDPU: remove LED node pinctrl-names

Using pinctrl-names requires the appropriate pinctrl-0 property, otherwise
it is not utilized at all.

Since its not required, just remove it.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts

@@ -28,7 +28,6 @@ memory@0 {
 	};
 
 	leds {
-		pinctrl-names = "default";
 		compatible = "gpio-leds";
 
 		led-power1 {