This reverts commit 4d8bde0c.

Reason for revert: needed for this revert: https://codereview.chromium.org/2679263002/

Original change's description:
> [parser/test] Simplify test-preparser/PreParserScopeAnalysis.
> 
> BUG=v8:5516
> R=​neis@chromium.org
> 
> Change-Id: Iabc8d942ffb8107c5284cc51654792a9e2872d0a
> Reviewed-on: https://chromium-review.googlesource.com/439325
> Commit-Queue: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#43001}

TBR=marja@chromium.org,neis@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5516

Change-Id: Ia205be1f43fc447119ccc00b16078a968c7b18d1
Reviewed-on: https://chromium-review.googlesource.com/439147
Commit-Queue: Michael Hablich <hablich@chromium.org>
Reviewed-by: Michael Hablich <hablich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43009}