[DO NOT MERGE] Remove the Client Suggestions APIs. am: bcbec84f6b am: b24c64018e

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

Change-Id: Ic7bd934977ea618c653733d09612242fe66bfad9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>