This reverts commit f64a87c4.

Revert "[v8] Even finer grain trace events for EVACUATE_COPY step."

This reverts commit 2c1b6d38.

Traces have been gathered by the bots. I'm still analyzing the results
but let's revert these for now to soothe the poor bots which are
running with v8.gc tracing enabled and regressing like crazy
because of this crbug.com/814800.

R=hpayer@chromium.org

Bug: chromium:814800, chromium:813824
Change-Id: If97c1ff5d14de18414c3b8d65ecb3aaf4f1bb32d
Reviewed-on: https://chromium-review.googlesource.com/934131Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Gabriel Charette <gab@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51502}