'Delete a Vpn Gateway.
:type vpn_gateway_id: str
:param vpn_gateway_id: The ID of the vpn_gateway to be deleted.
:type dry_run: bool
:param dry_run: Set to True if the operation should not actually run.
:rtype: bool
:return: True if successful'

def delete_vpn_gateway(self, vpn_gateway_id, dry_run=False):

    params = {'VpnGatewayId': vpn_gateway_id}
    if dry_run:
        params['DryRun'] = 'true'
    return self.get_status('DeleteVpnGateway', params)
