Mistaken install with clang - How to remove SPIRV-Tools?

I had an issue building another C++ project with XCode on macOS11.3 which pointed to a missing header named similarly to SPIRV-Tools so I went to the [downloads page here](https://github.com/KhronosGroup/SPIRV-Tools/blob/master/docs/downloads.md) to install for clang.

This ended up being a red herring, and my problem with a missing header in the other project was fixed with a linking solution within that, so SPIRV-Tools install was not required.

This is a ~320MB install.
I don't know much about .tgz installs but I didn't expect this to install upon opening.
How do I remove SPIRV-Tools from my machine to free up this space?

I tried inspecting the install.tgz with `vim` to see if I could discern the install files and where they may have ended up, but I can't figure it out.

It's good to learn more about C and C++, but I am out of my depth here with C install paths and how to remove plugins. Thank you for your help.

Review docs/downloads.md first, then inspect the install.tgz referenced by the report to determine what installation guidance is missing. Done means documenting how a macOS user can identify and remove the installed SPIRV-Tools files, or clarifying that the package does not provide an uninstall process.

Written by the indexing model from the issue text.