新增设备主子码流选择，默认为不开启

‘sxh’

2023-06-15 15df08964bb459d6d01ec5ef423eae094eac1c72

 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();
            }
        }
    }