Remove the managed banner from the Chrome settings UI

This banner has been obsoleted by the controlled setting indicators.

BUG=104955


Review URL: https://chromiumcodereview.appspot.com/11272026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@164195 0039d316-1c4b-4281-b951-d872f2087c98
19 files changed