Revert "browser: Privacy Guard support"

This reverts commit 2a654f8713cc3af108192dd33517d363e20b9984.

Change-Id: Ic433bff7946c0e3a095a34fc28d0f2051aa94b26
Merge branch 'cm-10.2' of git://github.com/CyanogenMod/android_packages_apps_Browser into cm-10.2