DO NOT DELETE EAUpdaterService.xpc !
This is a legit Apple component for your operating system.
Once you delete the EA App from "/Applications", you can run these commands to remove any leftovers:
Remove these Directories:
rm -rf ~/Library/Application\ Support/Electronic\ Arts/EA\ App
rm -rf ~/Library/Application\ Support/Origin
rm -rf ~/Library/Caches/com.ea.mac.eaapp
rm -rf ~/Library/Saved\ Application\ State/com.ea.mac.eaapp.savedState
sudo rm -rf /Users/Shared/Electronic\ Arts
Remove this file:
rm ~/Library/LaunchAgents/com.ea.app.backgroundAgent.plist