How to remove or disable an extension asset in Unity 2020

I’ve been running Unity 2020.1 on Ubuntu 19.04 without any problems for a while now. Today, I installed the VSCode extension asset and now Unity just crashes during startup. I choose my project from Unity Hub, the splash screen and progress bar pops up, and then everything just shuts down.

I’ve already submitted a crash report but I’d rather just revert the extension entirely so I can get working again. I’ve tried deleting the files from disk but Unity just downloads them again during startup.

How can I either remove or disable the VSCode extension completely without starting Unity?