[llvm] [DA] remove constraint propagation (PR #160924)

[Sjoerd Meijer via llvm-commits]

https://github.com/sjoerdmeijer approved this pull request.

Looks like everyone is okay with the idea. 
If you're happy to remove it, then let's do it, LGTM.




https://github.com/llvm/llvm-project/pull/160924