Merge "Remove sysui flag for VPN features Bug: 272805037, 279881422 Test: manual" into udc-dev am: 0189f818 am: 37d2c402 am: 396d4466 am: 0cf6bba2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23262936



Change-Id: I38fb3e702de470d9f867342e05ea29f4efbb182a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>