arm64: dts: imx8mm-kontron: Remove useless trickle-diode-disable from RTC node

The RV3028 driver doesn't use this property. Remove it.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi

@@ -211,7 +211,6 @@ rv3028: rtc@52 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_rtc>;
 		interrupts-extended = <&gpio4 1 IRQ_TYPE_LEVEL_LOW>;
-		trickle-diode-disable;
 	};
 };