[llvm] [InstCombine] Remove transformation on call instruction where return value need void to non-void conversion (PR #98536)

[YongKang Zhu via llvm-commits]

yozhu wrote:

> Would it be wise to backport this as this is the removal of something undesirable from the codebase? Or are we okay with 19.x retaining this behavior?

I'm fine with either way. This transformation is not desirable, but it had been in the codebase for quite a long time.

https://github.com/llvm/llvm-project/pull/98536