Merge "[CS17]Remove useless code(AsyncChannel) from ConnectivityService" am: ab31bd8c31 am: 22f91bdbca

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1625701

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ic6aa11902b9ade040bee702650722edfd65b9113