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This reverts commit f3f89493.

Reason for revert: Causing failures

Original change's description:
> [Perf] Enable system_health.* for histogram uploads
> 
> This CL switches all system_health benchmarks to the histogram pipeline.
> 
> Bug: 744736
> Change-Id: Icb97397ec417d27220e489651cc51591757d8c9e
> Reviewed-on: https://chromium-review.googlesource.com/1048626
> Reviewed-by: Emily Hanley <eyaich@chromium.org>
> Commit-Queue: Ethan Kuefner <eakuefner@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#556842}

TBR=eakuefner@chromium.org,eyaich@chromium.org

Change-Id: I53f1788cc1f488b207a0718e8fbe14e2899af5b7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 744736
Reviewed-on: https://chromium-review.googlesource.com/1052407Reviewed-by: Ethan Kuefner <eakuefner@chromium.org>
Commit-Queue: Ethan Kuefner <eakuefner@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557211}