Removes check of bodhi-client version
    
    Modification of this part of the code is not needed when a new major
    version of Bodhi is released (if there are no incompatibilities with
    previous Bodhi version).
    This approach was chosen instead of bumping the version every time there
    is a Bodhi major release.
    
    JIRA: COMPOSE-3860
    Fixes: rhbz#1796972
    
    Signed-off-by: Ondrej Nosek <onosek@redhat.com>