It's not like the timer is counting down and the game ends when the timer runs out. The timer is going up. There's no pressure, you can ignore it (or even write a script that hides it client side).
Oh come tf on, you can quite easily just view source and hide the timer, GP even was nice enough to make his code nice and tidy with easy to recognize names. Just ctrl-f timer.
It's not like you are having to rewrite his game.
Your edge-case psychological issue should be worth GP rewriting his game, when you couldn't be bothered to change some CSS in two seconds.
