Merge "Remove the feature flag of contextual home V2" into rvc-dev am: 1471727cdb am: be044b011a am: ded474179d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11907890

Change-Id: I19bd363a9e24b8a4d85524e24b0ecc42528134b4