Removed comments

Muzzle flash will be done in animation,
BG music was done in commit a6a64cdf69

game.py

@@ -20,8 +20,6 @@ class Game(gameUtils.Game):
         super().__init__(*args, **kwargs)
 
         # TODO: Utilise self.pm (the player manager)
-        # TODO: Add background music
-        # TODO: Add muzzle flash
         # TODO: Add animations for blank firing and real firing
         # TODO: Utilise the following new sounds:
         # gun-load: Should be played at the beginning of the game,