Revert "Change priv-apps /home/home labels to privapp_data_file"

There is a problem with on-disk labeling of files created by secondary
dex background compilation which is causing unexpected denials to show
up. Restore the old labeling until we are able to fix the underlying
problem.

Steps to reproduce:
  1) boot android device.
  2) adb root
  3) Run cmd package compile -r bg-dexopt --secondary-dex com.google.android.gms
  4) Examine the files in /data/user_de/0/com.google.android.gms
Expected:
  All files have the label privapp_data_file
Actual:
  The files in /data/user_de/0/com.google.android.gms/app_chimera/m
  are labeled "app_data_file", not "privapp_data_file".

This reverts commit 4df57822.

Bug: 112357170
Test: policy compiles
Change-Id: I38ba75c92c9c46e6a1fdbc02e3dc80c63adccaa8