Revert of Add [ Timeout ] to LeakExepctations to suppress Timeout failures on the Leak buildbot. (https://codereview.chromium.org/243703006/)

Reason for revert:
It looks like the bots timeout on the different LayoutTests on each run. Reverting the [ Timeout ] suppression entries.

Original issue's description:
> Add [ Timeout ] to LeakExepctations to suppress Timeout failures on the Leak buildbot.
> 
> TBR=hajimehoshi
> BUG=365202
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=172012

TBR=hajimehoshi@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=365202

Review URL: https://codereview.chromium.org/242803008

git-svn-id: svn://svn.chromium.org/blink/trunk@172099 bbb929c8-8fbe-4397-9dbb-9b2b20218538