Remove EBNF Composer (#13163)

python/sglang/srt/function_call/function_call_parser.py

@@ -195,41 +195,3 @@ class FunctionCallParser:
         elif tool_choice == "required" or isinstance(tool_choice, ToolChoice):
             json_schema = get_json_schema_constraint(self.tools, tool_choice)
             return ("json_schema", json_schema)
-
-    def get_ebnf(
-        self, tool_choice: Union[ToolChoice, Literal["required"]]
-    ) -> Optional[str]:
-        """
-        Get the EBNF grammar for the specified tool choice.
-
-        Args:
-            tool_choice: The tool choice specification
-
-        Returns:
-            EBNF grammar string, or None if no valid tools found
-
-        Note:
-            If a specific function is requested but not found in available tools,
-            logs a warning and falls back to using all available tools for backward compatibility.
-        """
-        filtered_tools = []
-        if isinstance(tool_choice, ToolChoice):
-            fn_name = tool_choice.function.name
-            filtered_tools = [t for t in self.tools if t.function.name == fn_name]
-
-            # Check if the requested function exists in available tools
-            if not filtered_tools:
-                available_functions = [t.function.name for t in self.tools]
-                logger.warning(
-                    f"Function '{fn_name}' not found in available tools. "
-                    f"Available functions: {available_functions}. "
-                    f"Skipping tool choice."
-                )
-
-                # TODO: Return a 400 error instead of warning when adapter supports proper error handling
-                # For now, fall back to return None
-                return None
-        else:
-            filtered_tools = self.tools
-
-        return self.detector.build_ebnf(filtered_tools)