cros_build_lib: Strip CreateTarball debugging.

A bunch of extra logic to help with crbug.com/547055 hasn't
helped. So... simplify the method again.

BUG=chromium:547055
TEST=run_tests

Change-Id: I28f7cbde2788c323bfcc3f43c75aa56f669e8b67
Reviewed-on: https://chromium-review.googlesource.com/373099
Commit-Ready: Don Garrett <dgarrett@chromium.org>
Tested-by: Don Garrett <dgarrett@chromium.org>
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
2 files changed