GitLab

In Network Quality Estimator (NQE), remove the logic to compute
increase in RTT since this is not being used anymore.

Change-Id: Icf1785cf5a11152c529ac40da7da43110dce382e
Bug: 895878
Reviewed-on: https://chromium-review.googlesource.com/c/1279946
Commit-Queue: Tarun Bansal <tbansal@chromium.org>
Reviewed-by: Ryan Sturm <ryansturm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600117}