[Misc] remove unused import (#20517)

Signed-off-by: reidliu41 <reid201711@gmail.com>

vllm/entrypoints/openai/tool_parsers/xlam_tool_parser.py

@@ -3,7 +3,7 @@
 # ruff: noqa
 import json
 from collections.abc import Sequence
-from typing import Any, Dict, List, Optional, Union
+from typing import Any, Optional, Union
 
 import regex as re