abuild: remove empty dirs in main package

clean up empty dirs

abuild.in

@@ -1491,6 +1491,12 @@ create_apks() {
 	local file= dir= name= ver= apk= datadir= size=
 	local gzip=$(command -v pigz || echo gzip)
 	getpkgver || return 1
+	rmdir "$pkgdir"/usr/lib \
+		"$pkgdir"/usr/bin \
+		"$pkgdir"/usr/share \
+		"$pkgdir"/usr \
+		"$pkgdir"/etc/
+		2>/dev/null || :
 	if ! options_has "!tracedeps"; then
 		for file in "$pkgbasedir"/.control.*/.PKGINFO; do
 			dir="${file%/.PKGINFO}"