[llvm-branch-commits] [lit] Remove python 2.7 code paths in builtin diff (PR #157558)

[Paul Kirth via llvm-branch-commits]

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

This seems fine to me, especially since it follows our written policy on version support.

Does this need any kind of release note? It's a pure dev dependency, so I'd say "no", but I could also see how a consumer would have wanted to know about it. 

https://github.com/llvm/llvm-project/pull/157558