Spark Fixes (#1764)

changes:

Removed shim for old spark system.
Converted all calls to old spark system with calls to new one.
Processor-based effects are no longer pooled, as it had minimal performance impact and was breaking things.
Tweaked some visible_messages for rogue drones.
PB effects' handling of location is now done at the /datum/effect_system level.

code/modules/reagents/Chemistry-Recipes.dm

@@ -605,9 +605,7 @@
 
 /datum/chemical_reaction/flash_powder/on_reaction(var/datum/reagents/holder, var/created_volume)
 	var/location = get_turf(holder.my_atom)
-	var/datum/effect/effect/system/spark_spread/s = new /datum/effect/effect/system/spark_spread
-	s.set_up(2, 1, location)
-	s.start()
+	spark(location, 2, alldirs)
 	for(var/mob/living/carbon/M in viewers(world.view, location))
 		switch(get_dist(M, location))
 			if(0 to 3)

code/modules/reagents/reagent_containers.dm

@@ -78,7 +78,7 @@
 
 	if (istype(target, /mob/living/silicon/robot))
 		var/mob/living/silicon/robot/R = target
-		R.spark_system.start()
+		R.spark_system.queue()
 
 	return 1