testing/firmware-fairphone-fp4: remove board-2.bin (MR 3262)

This file is now provided by linux-firmware-ath10k and conflicts with
the one provided by this package.

device/testing/firmware-fairphone-fp4/APKBUILD

 pkgname=firmware-fairphone-fp4
 pkgver=20211213
-pkgrel=0
+pkgrel=1
 pkgdesc="Firmware for Fairphone 4"
 subpackages="
 	$pkgname-adreno
@@ -76,8 +76,6 @@ venus() {
 wlan() {
 	pkgdesc="Fairphone 4 wlan firmware"
 
-	install -Dm644 "$builddir"/board-2.bin -t \
-		"$subpkgdir/lib/firmware/ath10k/WCN3990/hw1.0/"
 	install -Dm644 "$builddir"/wlanmdsp.mbn -t \
 		"$subpkgdir/lib/firmware/qcom/sm7225/fairphone4/"
 }