Snowdin and caves fluff and zoning removal (#95770)

## About The Pull Request

<img width="245" height="468" alt="image"
src="https://github.com/user-attachments/assets/e7924766-cf9a-4ca0-b3fb-a668d3d2cec0"
/>

## Why It's Good For The Game

shouldve been removed with the first pr

## Changelog

Removes everything for the caves and snowdin away missions except for
the original caves area because i used that in heretic, whoops.

not player facing there should be no CL

code/modules/mob/living/basic/pets/penguin/penguin.dm

@@ -167,11 +167,3 @@
 
 /mob/living/basic/pet/penguin/baby/permanent
 	can_grow_up = FALSE
-
-/mob/living/basic/pet/penguin/emperor/snowdin
-	minimum_survivable_temperature = ICEBOX_MIN_TEMPERATURE
-	gold_core_spawnable = NO_SPAWN
-
-/mob/living/basic/pet/penguin/baby/permanent/snowdin
-	minimum_survivable_temperature = ICEBOX_MIN_TEMPERATURE
-	gold_core_spawnable = NO_SPAWN

code/modules/mob/living/basic/space_fauna/spider/giant_spider/giant_spiders.dm

@@ -110,11 +110,6 @@
 	. = ..()
 	AddElement(/datum/element/web_walker, /datum/movespeed_modifier/fast_web)
 
-///Used in the caves away mission.
-/mob/living/basic/spider/giant/hunter/away_caves
-	minimum_survivable_temperature = 0
-	gold_core_spawnable = NO_SPAWN
-
 /**
  * ### Scout Spider
  * A subtype of the giant spider which is faster, has thermal vision, but less health and damage.
@@ -170,11 +165,6 @@
 	web_type = /datum/action/cooldown/mob_cooldown/lay_web/sealer
 	menu_description = "Avarage speed spider able to heal other spiders and itself together with a fast web laying capability, has low damage and health."
 
-///Used in the caves away mission.
-/mob/living/basic/spider/giant/nurse/away_caves
-	minimum_survivable_temperature = 0
-	gold_core_spawnable = NO_SPAWN
-
 /mob/living/basic/spider/giant/nurse/Initialize(mapload)
 	. = ..()
 	ADD_TRAIT(src, TRAIT_MEDICAL_HUD, INNATE_TRAIT)

code/modules/mob/living/basic/vermin/space_bat.dm

@@ -53,10 +53,3 @@
 		/datum/ai_planning_subtree/target_retaliate,
 		/datum/ai_planning_subtree/basic_melee_attack_subtree,
 	)
-
-///Subtype used in the caves away mission
-/mob/living/basic/bat/away_caves
-	name = "cave bat"
-	desc = "A rare breed of bat which roosts deep in caves."
-	minimum_survivable_temperature = 0
-	gold_core_spawnable = NO_SPAWN