Revert "Merge branch 'feature/online/vs_think_20250813' into release/2.1"

This reverts commit 02596fc537, reversing
changes made to 03347626a6.

fastdeploy/entrypoints/openai/protocol.py

@@ -72,6 +72,7 @@ class ToolCall(BaseModel):
     id: str = None
     type: Literal["function"] = "function"
     function: FunctionCall
+    index: int
 
 
 class DeltaFunctionCall(BaseModel):
@@ -95,18 +96,6 @@ class DeltaToolCall(BaseModel):
     function: Optional[DeltaFunctionCall] = None
 
 
-class ExtractedToolCallInformation(BaseModel):
-    # indicate if tools were called
-    tools_called: bool
-
-    # extracted tool calls
-    tool_calls: Optional[list[ToolCall]] = None
-
-    # content - per OpenAI spec, content AND tool calls can be returned rarely
-    # But some models will do this intentionally
-    content: Optional[str] = None
-
-
 class FunctionDefinition(BaseModel):
     """
     Function definition.