[clang-tools-extra] [llvm] LLVM is not needed for chapter two. (PR #69823)

[Fangrui Song via cfe-commits]

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

This is correct. `llvm/examples/Kaleidoscope/Chapter2/toy.cpp` doesn't use LLVM.

https://github.com/llvm/llvm-project/pull/69823