arm64: dts: rockchip: drop unused LED mode property from rk3328-roc-cc

GPIO LEDs do not have a 'mode' property:

  rockchip/rk3328-roc-pc.dtb: leds: led-0: Unevaluated properties are not allowed ('mode' was unexpected)
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221125144135.477144-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts

@@ -96,7 +96,6 @@ power_led: led-0 {
 			linux,default-trigger = "heartbeat";
 			gpios = <&rk805 1 GPIO_ACTIVE_LOW>;
 			default-state = "on";
-			mode = <0x23>;
 		};
 
 		user_led: led-1 {
@@ -104,7 +103,6 @@ user_led: led-1 {
 			linux,default-trigger = "mmc1";
 			gpios = <&rk805 0 GPIO_ACTIVE_LOW>;
 			default-state = "off";
-			mode = <0x05>;
 		};
 	};
 };