This reverts commit 1dbcc78e.

Reason for revert: Timeout has different reason. Test driver hangs.

Original change's description:
> [test] Bump shards after test262 roll
> 
> TBR=sergiyb@chromium.org
> NOTRY=true
> 
> Bug: v8:7834
> Change-Id: Ibd4e57034d493a5cc1a28049e0db0e4bb9c8f996
> Reviewed-on: https://chromium-review.googlesource.com/c/1270576
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#56462}

TBR=machenbach@chromium.org,sergiyb@chromium.org

Change-Id: Ic81edff220ee375f21ecd3f2ac1c2e0eeaf53878
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7834
Reviewed-on: https://chromium-review.googlesource.com/c/1270577Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56464}