Revert of memory_health_story: Extend the initial wait time by 8x. (patchset #1 id:1 of https://codereview.chromium.org/1713943002/ )

Reason for revert:
We've got some data for a couple of days. So finishing the experiment now.

Original issue's description:
> memory_health_story: Extend the initial wait time by 8x.
>
> The amount of wait before starting to run a GC and taking the snapshot
> of memory was originally set to 3 seconds, but this seemed too short for
> low-memory devices to reach a stable state. Due to this, Oilpan objects
> were still actively allocated even after the GC was run, causing the
> memory usage of this test looking worse due to Oilpan.
>
> This patch is a temporary band-aid to see if extending the wait time
> improves the situation on the bots. On my local environment it did.
>
> BUG=581422
> R=nednguyen@google.com
>
> Committed: https://crrev.com/b1617118e38e711e7c282e50247c6f9736470aa6
> Cr-Commit-Position: refs/heads/master@{#376725}

TBR=nednguyen@google.com,picksi@chromium.org,primiano@chromium.org,haraken@chromium.org,yutak@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=581422

Review URL: https://codereview.chromium.org/1744593002

Cr-Commit-Position: refs/heads/master@{#377974}

0 files changed, 0 insertions, 0 deletions