docs: function removeAttr(fs, pathOrFd, attr, isFd, callback) {
    var removeFn = 'fremovexattr';
  
    if(isFd !== true) {
      callback = isFd;
      removeFn = 'removexattr';
    }
  
    fs[removeFn](pathOrFd, attr, function(err) {
      if(err && err.code !== 'ENOATTR') {
        return callback(err);
      }
  
      callback();
    });
  }