[llvm] docs: Delete incorrect code generation section of HowToSubmitABug (PR #182315)

[Nikita Popov via llvm-commits]

https://github.com/nikic approved this pull request.

LGTM

We should probably provide some guidance for reducing miscompiles, but this certainly isn't how you do it.

https://github.com/llvm/llvm-project/pull/182315