[llvm] [VPlan] Remove ComputeAnyOfResult, use ComputeReductionResult. (PR #190039)

[via llvm-commits]

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ayalz wrote:

Independent: unclear what this test and others below are trying to check; a standard AnyOf would have `any.of.next = cond ? true : any.of.phi`. Should this change to
```suggestion
  %any.of.next = select i1 %cmp13.not.not, i1 %any.of, i1 true
```
otherwise `%any.of.next` is always `false`, rather than checking AnyOf. 

https://github.com/llvm/llvm-project/pull/190039