[llvm] [VPlan] Remove ILV::sinkScalarOperands. (PR #136023)

[Florian Hahn via llvm-commits]

fhahn wrote:

For reference, here's what the diff would look like without https://github.com/llvm/llvm-project/pull/136021: https://github.com/llvm/llvm-project/pull/136024

https://github.com/llvm/llvm-project/pull/136023