Revert "Generate an abort event when stopping" am: c4a891c6 am: f9f8a860 am: ae07e2e1 am: 10904b5d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22787398



Change-Id: Ida3cad15af03ff527f628336dc967ba3a29b941b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>