Partial revert "Settings : Add per app internet/data control"

This reverts commit a3549a27

Revert changes only to:
src/com/android/settings/privacyguard/PrivacyGuardManager.java
src/com/android/settings/privacyguard/AppInfoLoader.java

We currently have inconsistent behaviour where:

*) if pg is on by default, a newly installed app will not
   have restricted network access

*) if the pg state for an app is toggled off/on it will end
   up with restricted network access

Newly installed apps where pg is on should result in the
same end state compared to flipping pg guard off/on per app.

This partial revert stops the data control setting changing
when pg state is changed on a specific app.

Change-Id: I1eba14204abe0d137ebd45c5a6a3b7db354339bb