boards: rak5010_nrf52840: remove wrong uart1 node compatible

uart1 node compatible should not be changed.

Signed-off-by: Johann Fischer <[email protected]>

Author: jfischer-no

boards/arm/rak5010_nrf52840/rak5010_nrf52840.dts

@@ -74,7 +74,6 @@
 };
 
 &uart1 {
-	compatible = "nordic,nrf-uart";
 	current-speed = <115200>;
 	status = "okay";
 	tx-pin = <33>;