优化sip消息构建，去除ServerTransaction的使用

648540858

2022-10-18 74714711aa87dcd1259f5aebe55d362be732ffa2

 src/main/java/com/genersoft/iot/vmp/gb28181/event/alarm/AlarmEventListener.java

@@ -51,7 +51,6 @@
                }
                // 移除已关闭的连接
                it.remove();
                // e.printStackTrace();
            }
        }
    }