Merge "Remove unused code in CallNotifier." am: c13629de40 am: b7916f1f8b am: b44a886617 am: f4227a29d0

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/1836457

Change-Id: I899acb1ae7f54f2d71bdd0152ff21a0f1c85735d