Dissassociates a route table.

    association_id
        The Route Table Association ID to disassociate

    CLI Example:

    .. code-block:: bash

        salt myminion boto_vpc.disassociate_route_table 'rtbassoc-d8ccddba'

def disassociate_route_table(association_id, region=None, key=None, keyid=None, profile=None):
    '''
    Dissassociates a route table.

    association_id
        The Route Table Association ID to disassociate

    CLI Example:

    .. code-block:: bash

        salt myminion boto_vpc.disassociate_route_table 'rtbassoc-d8ccddba'

    '''

    try:
        conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)
        if conn.disassociate_route_table(association_id):
            log.info('Route table with association id %s has been disassociated.', association_id)
            return {'disassociated': True}
        else:
            log.warning('Route table with association id %s has not been disassociated.', association_id)
            return {'disassociated': False}
    except BotoServerError as e:
        return {'disassociated': False, 'error': __utils__['boto.get_error'](e)}