[llvm] [LoopRotate] Remove canRotateDeoptimizingLatchExit and multi-rotate (PR #162482)

[Marek Sedláček via llvm-commits]

mark-sed wrote:

> Note that the commit message is taken from the PR description, so you'll want to add the information you added to the commit message there as well.

Thank you, I did not realize that. I have updated it.

https://github.com/llvm/llvm-project/pull/162482