[Sampling profiler] Revert "Add error code for sampling profiler failures"

This reverts commit e7a1ddfb0a74efeeabf8dcc68b4fcd79fa281e08.

Logging of error codes to tracing have served their purpose for
investigation and are no longer needed.

R=etienneb@chromium.org

Bug: 931418
Change-Id: I48a66f6d816d35f8b1bb16e4e3c0fc083f1d31b9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1478183
Commit-Queue: Mike Wittman <wittman@chromium.org>
Reviewed-by: Etienne Bergeron <etienneb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#639114}
1 file changed