testing/startup: remove cgmanager-dev from makedepends

It's an optional dependency, and it's been archived upstream for 5
years

testing/startup/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer:
 pkgname=startup
 pkgver=2.0.3
-pkgrel=4
+pkgrel=5
 pkgdesc="Event driven task and service manager"
 options="!check"
 url="https://gitlab.com/chinstrap/startup"
@@ -17,7 +17,6 @@ makedepends="
 	eudev-dev
 	dbus-dev
 	json-c-dev
-	cgmanager-dev
 	linux-headers
 	glib-dev
 	dconf-dev
@@ -65,7 +64,7 @@ package() {
 	# Install fish completion
 	install -Dm0644 contrib/fish_completion/*.fish \
 		-t "$pkgdir"/usr/share/fish/vendor_completions.d
-	
+
 	mkdir -p "$pkgdir"/usr/share/dbus-1/system.d/
 	mv "$pkgdir"/etc/dbus-1/system.d/* "$pkgdir"/usr/share/dbus-1/system.d/
 }