Remove waterfall parameter from InsertBuild calls in tests

Per the change in http://crrev.com/c/1347298 remove the waterfall
parameter from calls to InsertBuild.

TEST=cros tryjob -g "1347298 1347299 1347393 1347392 1347391" chromeos-infra-unittests-pre-cq
BUG=chromium:836551
CQ-DEPEND=CL:1347298

Change-Id: I1c1c5e2a27e034496c798e48164b4f8d98834700
Reviewed-on: https://chromium-review.googlesource.com/1347299
Commit-Ready: David Burger <dburger@chromium.org>
Tested-by: David Burger <dburger@chromium.org>
Reviewed-by: Jason Clinton <jclinton@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>
1 file changed