Don't log failed imports of statsd and elasticsearch.

Various scripts in autotest may log debug messages about failing
import either statsd or elasticsearch.  The messages don't seem to
add value, and they something of a nuisance.  So, delete them.

BUG=None
TEST=run contrib/servo-stat, and see the messages gone

Change-Id: Ifdbac37a82ae966a14103e52dbeb3a4bdaae424d
Reviewed-on: https://chromium-review.googlesource.com/211895
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Richard Barnette <jrbarnette@chromium.org>
2 files changed