Cleaning up Layenia Rain Code

code/game/gamemodes/dynamic/dynamic_rulesets_events.dm

@@ -778,15 +778,3 @@
 	repeatable = TRUE
 	repeatable_weight_decrease = 3
 	occurances_max = 3
-
-/* Unused, testing purposes only.
-/datum/dynamic_ruleset/event/oxygen_rain
-	name = "Oxygen Rain"
-	typepath = /datum/round_event/oxygen_rain
-	requirements = list(0,0,0,0,0,0,0,0,0,0)
-	high_population_requirement = 0
-	weight = 1 //This is a rare occurence.
-	repeatable = FALSE
-	occurances_max = 1
-	map_whitelist = list("LayeniaStation.dmm")
-*/