Hi!
I cant remove this app. Its always open. I kill the process it restarts itself within no time and therefore i cant put it into trash. It autostarts when i reboot my Mac eventho it is neither in the launchagents folder or in the normal auutostart list. It behaves like mal/spyware. Really not cool.
So killing process from Terminal does not work either. The Process from which it starts is launchd, which is crucial for the OS to work.
Edit: I found a solution via Terminal ccleaner can be removed from launchd. Type this into Terminal: launchctl remove com.piriform.CCleaner