ARM: dts: imx8mm-verdin: drop rgmii_rxc_dly/txc_dly

The FEC in the i.MX8MM doesn't support this feature. So don't pretend one
can use it.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
diff --git a/arch/arm/dts/imx8mm-verdin.dts b/arch/arm/dts/imx8mm-verdin.dts
index 2980053..b86f46e 100644
--- a/arch/arm/dts/imx8mm-verdin.dts
+++ b/arch/arm/dts/imx8mm-verdin.dts
@@ -153,8 +153,6 @@
 
 &fec1 {
 	fsl,magic-packet;
-	fsl,rgmii_rxc_dly;
-	fsl,rgmii_txc_dly;
 	phy-handle = <&ethphy0>;
 	phy-mode = "rgmii";
 	phy-supply = <&reg_ethphy>;