ramips: remove doublet entry in WizFi630S dts file

&wmac entry in WIZnet WizFi630S dts file was existing two times.
This is removing one of them.

Signed-off-by: Tobias Welz <tw@wiznet.eu>

target/linux/ramips/dts/mt7628an_wiznet_wizfi630s.dts

@@ -106,10 +106,6 @@
 	};
 };
 
-&wmac {
-	status = "okay";
-};
-
 &spi0 {
 	status = "okay";