Fix errors doing reset from openMV IDE if the camera is running

[matiasandina]

Camera can connect but cannot be reset, "media cannot be ejected" or "busy". Keeps executing main.py.
If connect and disconnect, it goes into the "is it connected and bricked" loop.
The only thing that works is reboot.

[matiasandina]

Looks like directly unplugging the thermal cameras from the USB might be the fastest and most secure way to do it