[flang-commits] [clang] [flang] [llvm] [Clang] Remove ARCMigrate (PR #119269)

[John McCall via flang-commits]

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

This looks right to me, but let me tag in @akyrtzi just to make his own pass over this.

https://github.com/llvm/llvm-project/pull/119269