Stop setting default directory in URI

Bug: 28330423

Test: manually verified:
      - duplicates are not seen for the database where the bug was
        seen
      - duplicates are not seen for other databases, in all contacts
        view or in account view
      - all lists in tests app look ok

Change-Id: I0b77080186f4ef22a61a1a2f12686c5903f5a5d5