Removes world print, re-adds react() call

Also removes checks for if(W.reagent) in extinguisher code, as that is
being handled separately.

code/game/objects/items/weapons/extinguisher.dm

@@ -130,7 +130,6 @@
 				for(var/b=0, b<5, b++)
 					step_towards(W,my_target)
 					if(!W) return
-					if(!W.reagents) break
 					W.reagents.reaction(get_turf(W))
 					for(var/atom/atm in get_turf(W))
 						if(!W) return