How do you remove a gmod lua hack?

My friend gave me a injector to hack on gmod. I only remember it being an lua file, and i want to remove this file immmediately, but I just dont know how. Please tell me

you can't. once it's injected it's already in your computer's bloodstream.

Remove the script from your Lua folder, assuming you aren't executing from outside of it. Then, don't run the injector anymore.

google injectedluaphiledeleter2014.exe