Merge "Remove unused dimen auth_ripple_alpha_in_duration" into udc-dev am: 9ccba8c6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22195326



Change-Id: If98cf329fe4af24e16256380cb9d553c60fde5c7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>