Merge "Remove legacy network factories" am: 2bd97d70e2

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1574684

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I747f6352eb08589c00e77915eb17640e1d5f0ee1
tree: dba4c665122789033bfb5c4c7aecae2726435f67
  1. framework/
  2. service/
  3. OWNERS