Revert "Frameworks: privacy guard fix UI freeze"

This reverts commit 002c578d54fafa5fd5a2f5d821007f502be2d847.
Revert "Frameworks: privacy guard fix possible NPE"

This reverts commit e09d256c7e3fe509a505dea2276433aae06c859c.
Revert "am: Fix the privacy guard notification"

This reverts commit 7a47cd6715ce3b0937dd80a819cf2c09a1571213.
rm cm's privacy guard & try something different

Change-Id: I5aaba9bfb81607629296bcd0f47895610ae4644a