arm64: dts: rockchip: remove orphaned pinctrl-names from pinephone pro

The patch adding display support for the pinephone pro introduced two
regulators that contain pinctrl-names props but no pinctrl-assignments.

Looks like someone forgot the pinctrl settings, so remove the orphans
for now, until that changes.

Fixes: 3e987e1 ("arm64: dts: rockchip: Add internal display support to rk3399-pinephone-pro")
Cc: Martijn Braam <martijn@brixit.nl>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Ondrej Jirman <megi@xff.cz>
Reviewed-by: Ondrej Jirman <megi@xff.cz>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20241008203940.2573684-11-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts

@@ -166,7 +166,6 @@
 		regulator-max-microvolt = <1800000>;
 		vin-supply = <&vcc3v3_sys>;
 		gpio = <&gpio3 RK_PA5 GPIO_ACTIVE_HIGH>;
-		pinctrl-names = "default";
 	};
 
 	/* MIPI DSI panel 2.8v supply */
@@ -178,7 +177,6 @@
 		regulator-max-microvolt = <2800000>;
 		vin-supply = <&vcc3v3_sys>;
 		gpio = <&gpio3 RK_PA1 GPIO_ACTIVE_HIGH>;
-		pinctrl-names = "default";
 	};
 
 	vibrator {