This reverts commit 697b2c09.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Setting up the environment for testrunner refactored
> 
> Bug: v8:6917
> Change-Id: Ibc3c738ef807d37d8b76f440d9765c4d0405c021
> Reviewed-on: https://chromium-review.googlesource.com/735421
> Commit-Queue: Michał Majewski <majeski@google.com>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48923}

TBR=machenbach@chromium.org,majeski@google.com

Change-Id: Iafb29f1f13decc6e6ed00ed6e815008fcde1dc44
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6917
Reviewed-on: https://chromium-review.googlesource.com/737635Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48959}