Deletes a route from a route table within a VPC.

        :type route_table_id: str
        :param route_table_id: The ID of the route table with the route.

        :type destination_cidr_block: str
        :param destination_cidr_block: The CIDR address block used for
                                       destination match.

        :rtype: bool
        :return: True if successful

def delete_route(self, route_table_id, destination_cidr_block):
        """
        Deletes a route from a route table within a VPC.

        :type route_table_id: str
        :param route_table_id: The ID of the route table with the route.

        :type destination_cidr_block: str
        :param destination_cidr_block: The CIDR address block used for
                                       destination match.

        :rtype: bool
        :return: True if successful
        """
        params = {
            'RouteTableId': route_table_id,
            'DestinationCidrBlock': destination_cidr_block
        }

        return self.get_status('DeleteRoute', params)