Remove LegacyVpnRunner am: 4fa38a5caa am: a323b451ec

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2727694

Change-Id: I1efc31a2621bbee4d5be0681039bfc85614f09e8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>