Fix flaky tool calls in the Kimi K2.5 model (#17914)

Signed-off-by: Xinyuan Tong <xinyuantong.cs@gmail.com>

python/sglang/srt/server_args.py

@@ -27,7 +27,7 @@ import tempfile
 from typing import Any, Callable, Dict, List, Literal, Optional, Union
 
 from sglang.srt.connector import ConnectorType
-from sglang.srt.environ import ToolStrictLevel, envs
+from sglang.srt.environ import envs
 from sglang.srt.function_call.function_call_parser import FunctionCallParser
 from sglang.srt.layers.attention.fla.chunk_delta_h import CHUNK_SIZE as FLA_CHUNK_SIZE
 from sglang.srt.lora.lora_registry import LoRARef
@@ -2485,12 +2485,6 @@ class ServerArgs:
         envs.SGLANG_ENABLE_DETERMINISTIC_INFERENCE.set(
             "1" if self.enable_deterministic_inference else "0"
         )
-        # Set the highest strict level for Kimi K2 tool calls
-        if (
-            self.tool_call_parser == "kimi_k2"
-            and not envs.SGLANG_TOOL_STRICT_LEVEL.is_set()
-        ):
-            envs.SGLANG_TOOL_STRICT_LEVEL.set(ToolStrictLevel.PARAMETER)
 
     def _handle_cache_compatibility(self):
         if self.enable_hierarchical_cache and self.disable_radix_cache: