Remove NormalizeAutodetect; NFC

It is cleaner to have a callback based system where the logic of
whether an add recurrence is normalized or not lives on IVUsers.

This is one step in a multi-step cleanup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300330 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed