Remove au-generator.zip

We now do paygen in chroot. There is no need for au-generator anymore.

BUG=chromium:808495
TEST=tryjob payload

Change-Id: I6d6a198d04cc1c3b9fc3ce7d20885ad604fe5393
Reviewed-on: https://chromium-review.googlesource.com/1085689
Commit-Ready: Amin Hassani <ahassani@chromium.org>
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
2 files changed