arm64: dts: imx8mq-tqma8mq: Remove superfluous interrupt-names

This property was never needed, remove it. This also silences
dtbs_check warnings.

Fixes: b186b8b6 ("arm64: dts: freescale: add initial device tree for TQMa8Mx with i.MX8M")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mq-tqma8mq.dtsi

@@ -204,7 +204,6 @@ pcf85063: rtc@51 {
 		reg = <0x51>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_rtc>;
-		interrupt-names = "irq";
 		interrupt-parent = <&gpio1>;
 		interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
 		quartz-load-femtofarads = <7000>;