testing/mutter: remove duplicate dependency

Closes GH-8114

testing/mutter/APKBUILD

@@ -13,7 +13,7 @@ makedepends="gnome-desktop-dev libcanberra-dev upower-dev json-glib-dev
 	libgudev-dev libinput-dev gnome-common itstool libxml2-utils
 	libxcomposite-dev libxdamage-dev elogind-dev meson py3-setuptools
 	gnome-settings-daemon-dev libice-dev libsm-dev startup-notification-dev
-	xorg-server xorg-server-xwayland"
+	xorg-server"
 options="!check" # Can't be run with release builds
 subpackages="$pkgname-dev $pkgname-doc $pkgname-lang"
 source="https://download.gnome.org/sources/$pkgname/${pkgver%.*}/$pkgname-$pkgver.tar.xz