Revert "Dialer: Upgrade path for Google reverse lookup"

This reverts commit ac8fbc9674e20c3cb1efef1977ad9569b3534cc2.
Revert "[1/2] Remove Google Reverse Lookup: Auth may violate terms of service"

This reverts commit 70a0d16f3b48a59d3add850649daf3496191b619.