Revert of Add d8 to the chromium_builder_asan target. (https://codereview.chromium.org/142693006/)

Reason for revert:
This may be causing issues with runhooks. Reverting to be safe until I have time to investigate.

Original issue's description:
> Add d8 to the chromium_builder_asan target.
> 
> BUG=
> R=machenbach@chromium.org
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=249433

TBR=machenbach@chromium.org,phajdan.jr@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/156863002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249474 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249474