Removing obsolete call to start home activity with shell transitions am: 2b3dc6f7

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/24156953



Change-Id: I4662a1133716fce5861e899859784848e5daec2d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>