Mac OS X how to disable agents and daemons for a user?

Question

macOS

There is a remote MacPro 2008 to submit the app to the Appstore
This Mac is exclusively used for Xcode, IOS Simulator, Chrome.
Installed El Capitan. Everything is pretty slow. I wanted to clean it from unnecessary services
. But there were problems, I remove the service
launchctl unload -w /System/Library/LaunchAgents/com.apple.gamed.plist from under the root,
but it still hangs in the list of running programs after a reboot. And so with all demons and services. How to disable these services?

Answer 1

There is such a magical program called Lingon X try it.

Answer 2

And without a " magic " program, that is, with NO hands ... ???