Disable/Remove Plastic SCM

How can I disable or remove plastic scm? As far as I know, I never tried to enable it in the first place. I am using my own self-hosted git server and have no desire to use plastic.
I get this nag message that comes up very frequently when I'm using the editor, I think it appears every time I do a change that recompiles. It is getting very annoying. How can I disable this?


Project settings:

 

Maddening. Absolutely maddening.

Extra unwanted packages in new projects (collab, testing, rider and other junk):

https://forum.unity.com/threads/temp-unityengine-testrunner-dll-error.1133938/#post-7287748

About the fastest way I have found to make a project and avoid all this noise is to create the project, then as soon as you see the files appear, FORCE-STOP (hard-kill) Unity (with the Activity Manager or Task Manager), then go hand-edit the Packages/manifest.json file as outlined in the above post, then reopen Unity.

Sometimes the package system gets borked from all this unnecessary churn and requires the package cache to be cleared:

https://stackoverflow.com/questions/53145919/unity3d-package-cache-errors/69779122

 

Uninstall the "Version Control" package in the package manager.

 

Thank you so much, this seems to have fixed it!