Fix crash when tool call doesn't start with <tool_call>

Author: marceldev89

common/chat.cpp

@@ -2571,7 +2571,6 @@ static common_chat_params common_chat_params_init_qwen3_coder_xml(const common_c
             builder.add_rule("root", inputs.parallel_tool_calls ? "(" + tool_call + ")+" : tool_call);
 
             data.grammar_triggers.push_back({COMMON_GRAMMAR_TRIGGER_TYPE_WORD, "<tool_call>"});
-            data.grammar_triggers.push_back({COMMON_GRAMMAR_TRIGGER_TYPE_WORD, "<function="});
         });
 
         data.preserved_tokens = {