Remove bodhi network unit tests
    
    Summary:
    The unit test was to ensure that bodhi client doesn't make a network
    request during initialization to figure out whether it should return a
    Bodhi1 or Bodhi2 instance. That used to be the case and it made our unit
    tests very slow. Now the library doesn't seem to do that anymore and
    they even removed requests module (which we mocked in that unit test)
    from their code.
    
    Differential Revision: https://phab.qadevel.cloud.fedoraproject.org/D847