rockchip: dts: rk3399-evb: remove redundant gmac node

There are two same gmac node, remove one.
Signed-off-by: NKever Yang <kever.yang@rock-chips.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: NPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>

arch/arm/dts/rk3399-evb.dts

@@ -276,19 +276,3 @@
 	rx_delay = <0x10>;
 	status = "okay";
 };
-
-&gmac {
-        phy-supply = <&vcc_phy>;
-	phy-mode = "rgmii";
-	clock_in_out = "input";
-	snps,reset-gpio = <&gpio3 RK_PB7 GPIO_ACTIVE_LOW>;
-	snps,reset-active-low;
-	snps,reset-delays-us = <0 10000 50000>;
-	assigned-clocks = <&cru SCLK_RMII_SRC>;
-	assigned-clock-parents = <&clkin_gmac>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&rgmii_pins>;
-	tx_delay = <0x10>;
-	rx_delay = <0x10>;
-	status = "okay";
-};