Unable to remove testcases from the suite

client = connection.clients_v5_1
test_plan_client = client.get_test_plan_client()
test_plan_client.remove_test_cases_from_suite(project = project_name, plan_id = pland_id, suite_id = suite_id, test_case_ids = ['1752027'])

Error :
"C:\Users\akuma701\Downloads\azure-testplan\venv\lib\site-packages\azure\devops\v5_1\test_plan\test_plan_client.py", line 579, in remove_test_cases_from_suite
self._send(http_method='DELETE',
File "C:\Users\akuma701\Downloads\azure-testplan\venv\lib\site-packages\azure\devops\client.py", line 104, in _send
response = self._send_request(request=request, headers=headers, content=content, media_type=media_type)
File "C:\Users\akuma701\Downloads\azure-testplan\venv\lib\site-packages\azure\devops\client.py", line 68, in _send_request
self._handle_error(request, response)
File "C:\Users\akuma701\Downloads\azure-testplan\venv\lib\site-packages\azure\devops\client.py", line 279, in _handle_error
raise AzureDevOpsClientRequestError(wrapped_exception.message)
azure.devops.exceptions.AzureDevOpsClientRequestError: The requested resource does not support http method 'DELETE'.

Start with the reproduction in the issue and inspect azure/devops/v5_1/test_plan/test_plan_client.py at remove_test_cases_from_suite, especially the request sent around line 579. Reproduce the DELETE failure and compare the client request with the Azure DevOps test-plan API; done means the reported removal operation is handled correctly or the unsupported operation is clearly documented.