disable halloween species (shiptest-ss13#2434)

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## About The Pull Request
urhhhhhghhhh
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## Why It's Good For The Game
They are dullahans at worst (nonfunctional) or dumb at best. 
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benefit the game. If you can't justify it in words, it might not be
worth adding. -->

## Changelog

:cl:
del: Halloween no longer allows different species in prefs
/:cl:

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code/modules/mob/living/carbon/human/species_types/dullahan.dm

@@ -17,12 +17,6 @@
 
 	var/obj/item/dullahan_relay/myhead
 
-
-/datum/species/dullahan/check_roundstart_eligible()
-	if(SSevents.holidays && SSevents.holidays[HALLOWEEN])
-		return TRUE
-	return FALSE
-
 /datum/species/dullahan/on_species_gain(mob/living/carbon/human/H, datum/species/old_species)
 	. = ..()
 	H.lose_hearing_sensitivity(ORGAN_TRAIT)

code/modules/mob/living/carbon/human/species_types/golems.dm

@@ -696,11 +696,6 @@
 	REMOVE_TRAIT(C, TRAIT_HOLY, SPECIES_TRAIT)
 	..()
 
-/datum/species/golem/cloth/check_roundstart_eligible()
-	if(SSevents.holidays && SSevents.holidays[HALLOWEEN])
-		return TRUE
-	return ..()
-
 /datum/species/golem/cloth/random_name(gender,unique,lastname)
 	var/pharaoh_name = pick("Neferkare", "Hudjefa", "Khufu", "Mentuhotep", "Ahmose", "Amenhotep", "Thutmose", "Hatshepsut", "Tutankhamun", "Ramses", "Seti", \
 	"Merenptah", "Djer", "Semerkhet", "Nynetjer", "Khafre", "Pepi", "Intef", "Ay") //yes, Ay was an actual pharaoh

code/modules/mob/living/carbon/human/species_types/shadowpeople.dm

@@ -32,11 +32,6 @@
 		else if (light_amount < SHADOW_SPECIES_LIGHT_THRESHOLD) //heal in the dark
 			H.heal_overall_damage(1,1, 0, BODYTYPE_ORGANIC)
 
-/datum/species/shadow/check_roundstart_eligible()
-	if(SSevents.holidays && SSevents.holidays[HALLOWEEN])
-		return TRUE
-	return ..()
-
 /datum/species/shadow/nightmare
 	name = "Nightmare"
 	id = "nightmare"

code/modules/mob/living/carbon/human/species_types/skeletons.dm

@@ -23,11 +23,6 @@
 	species_l_leg = /obj/item/bodypart/leg/left/skeleton
 	species_r_leg = /obj/item/bodypart/leg/right/skeleton
 
-/datum/species/skeleton/check_roundstart_eligible()
-	if(SSevents.holidays && SSevents.holidays[HALLOWEEN])
-		return TRUE
-	return ..()
-
 //Can still metabolize milk through meme magic
 /datum/species/skeleton/handle_chemicals(datum/reagent/chem, mob/living/carbon/human/H)
 	if(chem.type == /datum/reagent/consumable/milk)

code/modules/mob/living/carbon/human/species_types/vampire.dm

@@ -16,14 +16,6 @@
 	var/info_text = "You are a <span class='danger'>Vampire</span>. You will slowly but constantly lose blood if outside of a coffin. If inside a coffin, you will slowly heal. You may gain more blood by grabbing a live victim and using your drain ability."
 	var/obj/effect/proc_holder/spell/targeted/shapeshift/bat/batform //attached to the datum itself to avoid cloning memes, and other duplicates
 
-
-
-
-/datum/species/vampire/check_roundstart_eligible()
-	if(SSevents.holidays && SSevents.holidays[HALLOWEEN])
-		return TRUE
-	return FALSE
-
 /datum/species/vampire/on_species_gain(mob/living/carbon/human/C, datum/species/old_species)
 	. = ..()
 	to_chat(C, "[info_text]")

code/modules/mob/living/carbon/human/species_types/zombies.dm

@@ -24,11 +24,6 @@
 	species_l_leg = /obj/item/bodypart/leg/left/zombie
 	species_r_leg = /obj/item/bodypart/leg/right/zombie
 
-/datum/species/zombie/check_roundstart_eligible()
-	if(SSevents.holidays && SSevents.holidays[HALLOWEEN])
-		return TRUE
-	return ..()
-
 /datum/species/zombie/infectious
 	name = "\improper Infectious Zombie"
 	id = "memezombies"