Merge "Removing unused SearchSessionManager" into tm-dev am: 34f51fbfc4 am: f81b1952aa

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/18085661

Change-Id: I006e96a10cae2cd33b1dc4d60950aae3eae3cb51
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>