Remove autotest dependency on netifaces

This dependency cannot be installed without root on developer machines
and may be easily replaced with code we already have in autotest.

BUG=b:25929635
TEST=test_droid no longer fails trying to import this file

Change-Id: I2c5d76bc48d5bd10d6103fefaa5b629d74279fe6
Reviewed-on: https://chromium-review.googlesource.com/318831
Commit-Ready: Christopher Wiley <wiley@chromium.org>
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
2 files changed