修复k线数据保存漏数据的bug。

src/listener_tools.rs

@@ -47,8 +47,6 @@ pub async fn update_record(new_record: &Record, mut records_map: MutexGuard<'_,
             let path = generate_file_path(exchange, date_str.as_str(), new_record.symbol.as_str(), "record", last_trade_minutes);
 
             write_to_file(record_json, path).await;
-
-            records_map.clear();
         }
     }