Revert "InputMapper refactor: Configure empty InputDevice" am: 7f1765e2e6 am: 925c2a5bde

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23971267

Change-Id: Idfd611a3f1022439da728365a449ec69b59cf7f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>