Remove some unnecessary code of mine that's causing runtimes

Should fix this:
The following runtime has occured 716 time(s).
runtime error: wrong type of value for list
proc name: handle regular hud updates (/mob/living/carbon/human/proc/handle_regular_hud_updates)
  source file: life.dm,1188
  usr: null
  src: Butch Adams (/mob/living/carbon/human)

Reason: The global_hud.blurry was getting deleted from people who were getting gibbed or w/e, then people were trying to add global_hud.blurry (which is null) to their screen, which isn't allowed.