old_contents: var Galileo = rewire("../lib/galileo");
  var board = new Galileo();
  
  board.on("ready", function() {
    var byte = 0;
    this.pinMode(9, this.MODES.OUTPUT);
  
    setInterval(function() {
      board.digitalWrite(9, (byte ^= 1));
    }, 500);
  });
  
new_contents: var Galileo = rewire("../lib/galileo");
  var board = new Galileo();
  
  board.on("ready", function() {
    var byte = 0;
  
    setInterval(function() {
      board.digitalWrite(9, (byte ^= 1));
    }, 500);
  });
  
subject: Remove unnecessary call to pinMode