[clang] [clang-tools-extra] [compiler-rt] [flang] [libclc] [libcxx] [lld] [lldb] [llvm] [NFC] Remove trailing whitespace across all non-test related files (PR #82838)

[Alexander Richardson via llvm-commits]

arichardson wrote:

This will cause huge merge conflicts for all downstreams. While they are easy to resolve it can be quite annoying. I think we should just do this as part of the global clang-format.

https://github.com/llvm/llvm-project/pull/82838