[Calgon]

The only way is to use a plugin, because you can't access any items outside of the scriptfiles folder in Pawn.

I used to use some similar code in one of my scripts and I used this plugin, but obviously the plugin can be deleted.

I would possibly do more in the script to ensure that it can't be loaded, you could delete all of the scriptfiles and create a bunch of random text files in the scriptfiles folder instead or something.