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

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

fastdeploy/entrypoints/engine_client.py

@@ -45,7 +45,6 @@ class EngineClient:
         data_parallel_size=1,
         enable_logprob=False,
         workers=1,
-        tool_parser=None,
     ):
         input_processor = InputPreprocessor(
             tokenizer,
@@ -53,7 +52,6 @@ class EngineClient:
             limit_mm_per_prompt,
             mm_processor_kwargs,
             enable_mm,
-            tool_parser,
         )
         self.enable_logprob = enable_logprob
         self.enable_mm = enable_mm