Apk which is not on "/system/priv-app" still has privileged flag.

When an app is moved from "/system/priv-app" it still has the
privileged flag.

Change-Id: I7713382db34697f7b68283dbbbd25a1349cbecdb
Remove some pointless code.

Unnecessary disk reads for values that are never
used (and cached elsewhere, so that optimization is
rendered pointless).

Change-Id: Ic14a8b53a96908bb03eae28759d7be2c217e8125