Revert of Reenable linux_aura on the main builders. (Again). (https://codereview.chromium.org/138033023/)

Reason for revert:
Blink layout tests are failing:

http/tests/plugins/interrupted-get-url.html
http/tests/plugins/third-party-cookie-accept-policy.html
plugins/mouse-click-plugin-clears-selection.html

Original issue's description:
> Reenable linux_aura on the main builders. (Again).
> 
> We upgraded the eu-strip binary so that it can deal with binaries that
> are more than two gigabytes large. This should fix the crash on the
> Google Chrome Linux builder, which was the only bot to break last night.
> 
> BUG=319075,125106,303342,318961
> NOTRY=True
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=245737

TBR=erg@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=319075,125106,303342,318961

Review URL: https://codereview.chromium.org/143073002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245865 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245865