[llvm-dev] Delete llvm-objcopy --build-id-link-{dir, input, output} and LLVM_RUNTIME_BUILD_ID_LINK_TARGETS?

[Fangrui Song via llvm-dev]

 From Google Search and Debian Code Search, looks like they have no user now.
Since I cannot tell whether there may be a proprietary user, I am creating this post.
If you are using them, please comment:)

https://reviews.llvm.org/D96310 llvm-objcopy --build-id-link-{dir,input,output}
https://reviews.llvm.org/D96360 CMake LLVM_RUNTIME_BUILD_ID_LINK_TARGETS