testing/libretro-beetle-supergrafx: remove bundled deps

testing/libretro-beetle-supergrafx/APKBUILD

@@ -2,18 +2,20 @@
 # Maintainer: David Demelier <markand@malikania.fr>
 pkgname=libretro-beetle-supergrafx
 pkgver=0_git20210412
-pkgrel=0
+pkgrel=1
 _commit="7a84c5e3b9e0dc44266d3442130296888f3c573a"
 pkgdesc="standalone port of Mednafen PCE Fast to libretro"
 url="https://github.com/libretro/beetle-supergrafx-libretro"
 arch="all"
 license="GPL-2.0-only"
+makedepends="zlib-dev"
 source="$pkgname-$_commit.tar.gz::https://github.com/libretro/beetle-supergrafx-libretro/archive/$_commit.tar.gz"
 builddir="$srcdir/beetle-supergrafx-libretro-$_commit"
 options="!check" # No tests
 
 build() {
-	make
+	rm -rf deps/zlib*
+	make SYSTEM_ZLIB=1
 }
 
 package() {