Revert "Turn on the feature flag for Android S Settings."

This reverts commit 0197d410.

Reason for revert: DroidMonitor: Potential culprit for Bug 179262029 - verifying through Forrest before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Change-Id: Ifed6374b417d10ca76c3c2805ac985282174b367