function teardownSignalsTrap() {
  _process.removeListener('SIGINT', exit);
  _process.removeListener('SIGTERM', exit);
  _process.removeListener('message', onMessage);

  if (isWindowsTTY(_process)) {
    cleanupWindowsSignals(_process);
  }
}
Removes interruption signal listeners and tears down capture-exit

@method teardownSignalsTrap