'Removes an association from a route table. This will cause all subnets
that would\'ve used this association to now use the main routing
association instead.
:type association_id: str
:param association_id: The ID of the association to disassociate.
:type dry_run: bool
:param dry_run: Set to True if the operation should not actually run.
:rtype: bool
:return: True if successful'

def disassociate_route_table(self, association_id, dry_run=False):

    params = {'AssociationId': association_id}
    if dry_run:
        params['DryRun'] = 'true'
    return self.get_status('DisassociateRouteTable', params)
