Remove p2p-auto.conf

This CL removes the Upstart job for automatically starting p2p if
there is content to share; instead, this is now the responsibility of
p2p applications such as e.g. update_engine.

BUG=chromium:260441
TEST=Unit tests pass + manually tested
Change-Id: Ie86889a6efb9d1196481e373ba843e6e2bb575b4
Reviewed-on: https://gerrit.chromium.org/gerrit/64842
Reviewed-by: Chris Sosa <sosa@chromium.org>
Commit-Queue: David Zeuthen <zeuthen@chromium.org>
Tested-by: David Zeuthen <zeuthen@chromium.org>
3 files changed