I’ve been trying out Code Pilot 2 - if you develop in Xcode I’d encourage you to check it out. It’s a clever piece of kit, but it wasn’t for me (old dog, new tricks) and I couldn’t find out how to uninstall it. There’s no info in Code Pilot’s preferences pane in Xcode, in the installer or on the website. Anyway, it looks as though all you need to do is navigate to:
CodePilot2.xcplugin. Job done.