Fix SagemakerAPILLM test

tests/llm/test_sagemaker.py

@@ -54,7 +54,7 @@ class TestSagemakerAPILLM(unittest.TestCase):
     def test_gen(self):
         with patch.object(self.sagemaker.runtime, 'invoke_endpoint', 
                           return_value=self.response) as mock_invoke_endpoint:
-            output = self.sagemaker.gen(None, None, self.messages)
+            output = self.sagemaker.gen(None, self.messages)
             mock_invoke_endpoint.assert_called_once_with(
                 EndpointName=self.sagemaker.endpoint,
                 ContentType='application/json',
@@ -66,7 +66,7 @@ class TestSagemakerAPILLM(unittest.TestCase):
     def test_gen_stream(self):
         with patch.object(self.sagemaker.runtime, 'invoke_endpoint_with_response_stream', 
                           return_value=self.response) as mock_invoke_endpoint:
-            output = list(self.sagemaker.gen_stream(None, None, self.messages))
+            output = list(self.sagemaker.gen_stream(None, self.messages))
             mock_invoke_endpoint.assert_called_once_with(
                 EndpointName=self.sagemaker.endpoint,
                 ContentType='application/json',