v0.0.0-6149-g0a983a672

cpp_transpiler might emit functions not needed. Keep compiler at ease.

As seen in CI run
https://github.com/google/xls/actions/runs/11335606242/job/31524066818#step:6:29

No need to generate warnings in code that are not directly actionable.

PiperOrigin-RevId: 685876389