Remove sys.lazy_modules?

This is inspired by @encukou post here: Sys.lazy_modules clarification PEP 810 says sys.laxy_modules is there but it doesn’t really explain why. I’m wondering if we just want to remove it because it is a little wonky as pointed out. I think the original reason for it to exist was for tooling support. It would allow you to introspect the process and see what modules have been lazily imported but not yet reified. Technically though this can almost completely be reverse engineered - you can look a...