PrusaSlicer: Removing unused system system settings

In {Print, Filament, Printer} Settings, for each systems setting you want to keep:

• save a copy with your own name, e.g. "marhar PLA"

Now rename PrusaResearch.ini to PrusaResearch.ini.SAFE in the vendors directory.

On Mac, that's Library/Application Support/PrusaSlicer/vendor