Disable physics and cloth manager

I’m making my own physics system so I’ve been trying to slim unity down a bit. I did this…

Physics.simulationMode = SimulationMode.Script;

And that got rid of most of the physics calls in the profiler but it’s still calling the “cloth manager” which I’m not sure how to get rid of. Also physics 2D and particle system. I’m not using any of this for my game so I’d love to get rid of the physics altogether but google says its not possible.

I know it’s kinda silly as its not using much resources as is but I’m on a lower end laptop so every bit helps. Any ideas?