arm64: dts: rockchip: Remove UART2 from RGB30

The Powkiddy RGB30 has no onboard UART header, so remove the reference
to it in the device tree. This was left on by mistake in the initial
commit.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20231018153357.343142-4-macroalpha82@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3566-powkiddy-rgb30.dts

@@ -64,6 +64,10 @@ simple-audio-card,cpu {
 
 /delete-node/ &adc_keys;
 
+&chosen {
+	/delete-property/ stdout-path;
+};
+
 &cru {
 	assigned-clocks = <&pmucru CLK_RTC_32K>, <&cru PLL_GPLL>,
 			  <&pmucru PLL_PPLL>, <&cru PLL_VPLL>;
@@ -149,4 +153,9 @@ rk817_charger: charger {
 	};
 };
 
+/* There is no UART header visible on the board for this device. */
+&uart2 {
+	status = "disabled";
+};
+
 /delete-node/ &vibrator;