The cleanup after uninstalling the app doesn't work for me

Instead of the commands provided in the Readme:
```
adb shell settings delete global http_proxy
adb shell settings delete global global_http_proxy_host
adb shell settings delete global global_http_proxy_port
```

I had to use this one, and only after that the internet connection started working again:
```
adb shell settings put global http_proxy :0 
```