[DO NOT MERGE] Remove the Client Suggestions APIs. am: bcbec84f6b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22805286

Change-Id: I799a9eb120a020519276787b499406f2209e6a78
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>