The old hammer entry points and use of scons for chromium is long gone.
Dropping it.

BUG=None
TEST=None
R=dpranke@chromium.org

Review-Url: https://codereview.chromium.org/2016053004

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@300667 0039d316-1c4b-4281-b951-d872f2087c98