Trace Tests: Remove auto-generated code. Bug: angleproject:5133 Change-Id: I71a82071b1c667475f7fefcd6c8766a9de71141d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3144215 Reviewed-by: Cody Northrop <cnorthrop@google.com> Reviewed-by: Tim Van Patten <timvp@google.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>