Log : start / stop scanning entry ever second
I run homebridge in service mode (no DEBUG and no -D) but the homebridge log file run full with about 100 entries per second like this :

[2020-10-11 21:42:45] [Keller] Start scanning.
[2020-10-11 21:42:45] [WC] Stopped scanning.
[2020-10-11 21:42:45] [Wohnzimmer] Stopped scanning.
[2020-10-11 21:42:45] [Keller] Stopped scanning.
[2020-10-11 21:42:45] [WC] Stopped scanning.
[2020-10-11 21:42:45] [Wohnzimmer] Stopped scanning.
[2020-10-11 21:42:45] [Keller] Stopped scanning.
[2020-10-11 21:42:45] [WC] Stopped scanning.
[2020-10-11 21:42:45] [Wohnzimmer] Stopped scanning.
[2020-10-11 21:42:45] [Keller] Stopped scanning.
[2020-10-11 21:42:45] [WC] Stopped scanning.
[2020-10-11 21:42:45] [Wohnzimmer] Stopped scanning.
[2020-10-11 21:42:45] [Keller] Stopped scanning.
[2020-10-11 21:42:45] [WC] Stopped scanning.

### Expected Behavior
at least not scanning log messages 


### Steps to Reproduce (for bugs)
I start homebridge in "Insecure" Mode to enable Accessory Control in Homebridge Config UI X

### Versions
<!-- Please run commands and include versions below. -->
- **homebridge**: 1.1.6
- **homebridge-mi-hygrothermograph**: v3.0.1`
- **node**:       v12.19.0
- **OS**:        Raspbian GNU/Linux 9 (stretch) on a PI 3

### Configuration

```json

```

### Homebridge Log / Command Output

```
[2020-10-11 21:48:41] [HB Supervisor] Starting Homebridge with extra flags: -I
[2020-10-11 21:48:41] [HB Supervisor] Started Homebridge v1.1.6 with PID: 2667
[2020-10-11 21:48:43] Loaded config.json with 4 accessories and 2 platforms.
[2020-10-11 21:48:43] ---
[2020-10-11 21:48:44] Loaded plugin: homebridge-avea-bulb@1.1.3
[2020-10-11 21:48:44] Registering accessory 'homebridge-avea-bulb.AveaBulb'
[2020-10-11 21:48:44] ---
[2020-10-11 21:48:44] Loaded plugin: homebridge-config-ui-x@4.28.1
[2020-10-11 21:48:44] Registering platform 'homebridge-config-ui-x.config'
[2020-10-11 21:48:44] ---
[2020-10-11 21:48:44] Loaded plugin: homebridge-mi-hygrothermograph@3.0.1
[2020-10-11 21:48:47] Registering accessory 'homebridge-mi-hygrothermograph.Hygrotermograph'
[2020-10-11 21:48:47] ---
[2020-10-11 21:48:47] Loaded plugin: homebridge-shelly@0.15.5
[2020-10-11 21:48:48] Registering platform 'homebridge-shelly.Shelly'
[2020-10-11 21:48:48] ---
[2020-10-11 21:48:48] Loading 2 platforms...
[2020-10-11 21:48:48] [Config] Initializing config platform...
[2020-10-11 21:48:48] [Config] Running in Service Mode
[2020-10-11 21:48:48] [Shelly] Initializing Shelly platform...
[2020-10-11 21:48:48] Loading 4 accessories...
[2020-10-11 21:48:48] [WC] Initializing Hygrotermograph accessory...
[2020-10-11 21:48:48] [Wohnzimmer] Initializing Hygrotermograph accessory...
[2020-10-11 21:48:48] [Keller] Initializing Hygrotermograph accessory...
[2020-10-11 21:48:48] [Tischlampe] Initializing AveaBulb accessory...
```
