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: Iba27705537b7ca730e521c0f2601c70fdc6e4bd3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>