System Settings -> General -> Login Items
It is great that Apple have made it clear to people that they have these login items and background tasks, but (like much of System Settings) it is badly executed.
How do I uninstall the drivers for these? I don't see a way to do so.
Uninstalling an app involves more than just deleting the app from /Applications. You need to use an "uninstaller" like the free
AppCleaner. I also use the paid apps "Remove-It" and "App Cleaner and Uninstaller". You can (in decreasing order of preference):
1. A few apps (e.g. those from Adobe) have uninstaller apps. Use these if you can.
2. Reinstall the app, then uninstall with AppCleaner. This will delete the app and remove associated files including background tasks.
3. Poke around in ~/Library/LaunchAgents, /Library/LaunchAgents, /Library/LaunchDaemons and delete items which refer to apps you know you have deleted. Then reboot. This will get rid of most background tasks. Take care or you can mess up your system.
4. Put up with the undeleted background tasks most of which are probably not actually running (because of what you have deleted) and any others are probably not doing any harm.