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Revert of Recorded additional tough_energy_cases. (patchset #1 id:1 of https://codereview.chromium.org/506063002/)

Reason for revert:
Errors: "WARNING:root:The page set archives for some pages are missing. Someone forgot to check them in, or they were deleted. Skipping those pages. To fix this, record those pages using record_wpr. To ignore this warning and run against live sites, pass the flag --use-live-sites."

Example: http://chromegw/i/chromium.perf/builders/Win%208%20Perf%20%282%29/builds/3086/steps/tab_switching.tough_energy_cases/logs/stdio

Original issue's description:
> PERF SHERIFF: This CL changes the tough_energy_cases test.
>
> Recorded additional tough_energy_cases.
> Moved all test cases to codepen, so they're easy to edit and all http.
>
> BUG= 386152
>
> Committed: https://chromium.googlesource.com/chromium/src/+/f4919a56f8dde79db10d158940bab9b5a95688f0

TBR=tonyg@chromium.org,jeremy@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG= 386152

Review URL: https://codereview.chromium.org/535153003

Cr-Commit-Position: refs/heads/master@{#293136}