fsl-imx8mq: remove unused temp_delta property

Change-Id: Ife8f0451363b30b04c736e47d217e9ebbdbf3705
(cherry picked from commit a8817d18751489d95a01806e5fbf863c450d7467)
diff --git a/arch/arm64/boot/dts/freescale/fsl-imx8mq.dtsi b/arch/arm64/boot/dts/freescale/fsl-imx8mq.dtsi
index 91189b7..377e40f 100644
--- a/arch/arm64/boot/dts/freescale/fsl-imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-imx8mq.dtsi
@@ -407,7 +407,6 @@
 		#thermal-sensor-cells =  <0>;
 
 		throttle-cfgs {
-			throttle,temp_delta = <3000>;
 			throttle_devfreq: devfreq {
 				throttle,max_state = <2>;
 				#cooling-cells = <2>;