Deinitialises the PulseIn and releases any hardware and software
        resources for reuse.

def deinit(self):
        """Deinitialises the PulseIn and releases any hardware and software
        resources for reuse."""
        # Clean up after ourselves
        self._process.terminate()
        procs.remove(self._process)
        self._mq.remove()
        queues.remove(self._mq)