This flag causes turbofan to generate more detailed line information
for optimized code. This might have caused regressions in Sunspider and
and Jetstream. This speculative revert will help us find out.

Bug: chromium:875677, chromium:875723
Change-Id: I26cf68e94b66b9bd2c024c5f4be427f3033a59da
Reviewed-on: https://chromium-review.googlesource.com/1185018Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55313}