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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 remove_masquerade(zone=None, permanent=True):
    '''
    Remove masquerade on a zone.
    If zone is omitted, default zone will be used.

    .. versionadded:: 2015.8.0

    CLI Example:

    .. code-block:: bash

        salt '*' firewalld.remove_masquerade

    To remove masquerade on a specific zone

    .. code-block:: bash

        salt '*' firewalld.remove_masquerade dmz
    '''
    if zone:
        cmd = '--zone={0} --remove-masquerade'.format(zone)
    else:
        cmd = '--remove-masquerade'

    if permanent:
        cmd += ' --permanent'

    return __firewall_cmd(cmd)