Remove ANGLE code comments related to base::clamp We are recently converting base::clamp to std::clamp, and the original code comments related to base::clamp can be removed. Bug: angleproject:8140, chromium:1231569, chromium:1373621 Change-Id: Iae5f9e816ef1c531d728a35079d6110d1a9dad2f Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4469309 Auto-Submit: Ho Cheung <uioptt24@gmail.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>