Merge "speech: Remove hard-coded preference key from the controllers" into udc-dev am: bcae90c3

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/23353398



Change-Id: Icd7905b9974f0a62d7b97e3f899107878fdf918f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>