Settings: appops: Drop GET_UNINSTALLED_PACKAGES from getApplicationInfo()

* Not sure why this flag was even there in the first place
  but removing it fixes an issue where app crashes due to
  ApplicationInfo.sourceDir being null.
* The easiest way to reproduce that issue is to remove
  /data/app/{} of any app listed in 'bootup' category
  then after a reboot Settings app will crash when trying
  to show said category.

Change-Id: I96e83a35b732b426a8e1a94604549172d2e9f03c