function deleteFile(filePath) {
  if (!DELETE_ORPHANED) {
    console.log(chalk.red('ORPHANED'), filePath);
    return;
  }
  try {
    fs.unlinkSync(filePath);
    console.log(chalk.red('DELETED'), filePath);
  } catch (ex) {
    console.log(chalk.red('DELETE failed'), filePath);
    console.log(ex);
  }
}
@fileoverview Finds translated docs that no longer have a matching EN
 version.

@author Pete LePage <petele@google.com>