Revert "Ignores protected broadcasts if not priv-app"

Revert of I5bd2bf3bd7c38fd9cc563a02b24bc569495d79ed

For now, allow all system apps to declare protected
broadcasts. This will be cleaned up in a future change.

Bug: 158570769

Change-Id: I54d236c0a6daaa934bd64a3bd05e2654e0e868fe
1 file changed