arm64: dts: rockchip: rockpro64 dts remove unused lcd-reset pinmux

lcd panel pinmux is unused and the pin actually for something different,
so removing it.
Signed-off-by: Akash Gajjar <Akash_Gajjar@mentor.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts

@@ -527,12 +527,6 @@ diy_led_gpio: diy_led-gpio {
 		};
 	};
 
-	lcd-panel {
-		lcd_panel_reset: lcd-panel-reset {
-			rockchip,pins = <4 RK_PD6 RK_FUNC_GPIO &pcfg_pull_up>;
-		};
-	};
-
 	pcie {
 		pcie_pwr_en: pcie-pwr-en {
 			rockchip,pins = <1 RK_PD0 RK_FUNC_GPIO &pcfg_pull_none>;