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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def servicegroup_delete(sg_name, **connection_args):
    '''
    Delete a new service group

    CLI Example:

    .. code-block:: bash

        salt '*' netscaler.servicegroup_delete 'serviceGroupName'
    '''
    ret = True
    sg = _servicegroup_get(sg_name, **connection_args)
    if sg is None:
        return False
    nitro = _connect(**connection_args)
    if nitro is None:
        return False
    try:
        NSServiceGroup.delete(nitro, sg)
    except NSNitroError as error:
        log.debug('netscaler module error - NSServiceGroup.delete() failed: %s', error)
        ret = False
    _disconnect(nitro)
    return ret