ath79: compex_wpj531: remove wrong wifi device

This device does not come with a pci card. It has a slot where one can
get supplied. What's more, nvmem or ieee80211 frequency limits are not
applied here. It can just get removed.

Signed-off-by: Rosen Penev <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/18920
Signed-off-by: Robert Marko <[email protected]>

target/linux/ath79/dts/qca9531_compex_wpj531-16m.dts

@@ -147,11 +147,6 @@
 
 &pcie0 {
 	status = "okay";
-
-	wifi@0,0 {
-		compatible = "pci168c,003c";
-		reg = <0x0000 0 0 0 0>;
-	};
 };
 
 &usb_phy {