Mutiple Hub showing extra TV
**Describe the bug**
Using multiple hubs. One TV is showing twice in Homekit but cannot actually control device

**To Reproduce**
Steps to reproduce the behavior

**Expected behavior**
Homekit should only display two televisions, not 3. Should also be able to control device.

**Screenshots**
![D315EBF3-7122-41CC-9326-AB510D2ADBC8_1_105_c](https://user-images.githubusercontent.com/19697514/72580614-b629a600-38aa-11ea-8f39-97e801a842d1.jpeg)

![B822F81C-5902-4B49-83AC-1458C6DCDE57_1_105_c](https://user-images.githubusercontent.com/19697514/72580638-c17cd180-38aa-11ea-8536-f4e7244e3d9b.jpeg)


**IOS (please complete the following information):**
- Version [13.3]
- Device: [iPhoneXR]

**Logs**
Your log in debug mode (-D option)

**Config**
{
            "platform": "HarmonyHubWebSocket",
            "name": "Living_Room",
            "hubIP": "192.168.1.xxx",
            "otherPlatforms": [
                {
                    "name": "Master_Bedroom",
                    "hubIP": "192.168.1.xxx",
                    "mainActivity": "Watch TV"
                }
            ],
            "publishAllTVAsExternalAccessory": true,
            "mainActivity": "Watch TV",
            "plugin_map": {
                "plugin_name": "homebridge-harmony"
            }

**Additional context**
Add any other context about the problem here.
