system/acl: modernise

system/acl/APKBUILD

@@ -16,7 +16,6 @@ subpackages="$pkgname-dev $pkgname-doc $pkgname-lang libacl"
 source="https://download.savannah.nongnu.org/releases/acl/acl-$pkgver.tar.gz"
 
 prepare() {
-	cd "$builddir"
 	default_prepare
 	sed -i \
 		-e '/^as_dummy=/s:=":="$PATH$PATH_SEPARATOR:' \
@@ -24,7 +23,6 @@ prepare() {
 }
 
 build() {
-	cd "$builddir"
 	CONFIG_SHELL=/bin/sh ./configure \
 		--build=$CBUILD \
 		--host=$CHOST \
@@ -35,7 +33,6 @@ build() {
 }
 
 package() {
-	cd "$builddir"
 	make DESTDIR="$pkgdir" install
 }