[CHORE]: remove redundant-cast (#24807)

api/core/tools/utils/message_transformer.py

@@ -3,7 +3,7 @@ from collections.abc import Generator
 from datetime import date, datetime
 from decimal import Decimal
 from mimetypes import guess_extension
-from typing import Optional, cast
+from typing import Optional
 from uuid import UUID
 
 import numpy as np
@@ -159,8 +159,7 @@ class ToolFileMessageTransformer:
 
             elif message.type == ToolInvokeMessage.MessageType.JSON:
                 if isinstance(message.message, ToolInvokeMessage.JsonMessage):
-                    json_msg = cast(ToolInvokeMessage.JsonMessage, message.message)
-                    json_msg.json_object = safe_json_value(json_msg.json_object)
+                    message.message.json_object = safe_json_value(message.message.json_object)
                 yield message
             else:
                 yield message

api/core/tools/utils/model_invocation_utils.py

@@ -129,17 +129,14 @@ class ModelInvocationUtils:
         db.session.commit()
 
         try:
-            response: LLMResult = cast(
-                LLMResult,
-                model_instance.invoke_llm(
-                    prompt_messages=prompt_messages,
-                    model_parameters=model_parameters,
-                    tools=[],
-                    stop=[],
-                    stream=False,
-                    user=user_id,
-                    callbacks=[],
-                ),
+            response: LLMResult = model_instance.invoke_llm(
+                prompt_messages=prompt_messages,
+                model_parameters=model_parameters,
+                tools=[],
+                stop=[],
+                stream=False,
+                user=user_id,
+                callbacks=[],
             )
         except InvokeRateLimitError as e:
             raise InvokeModelError(f"Invoke rate limit error: {e}")