Icons folder cleaning wave two (#76788)

## About The Pull Request

Further continous organizing and cleaning the Icons folder. There are
still some minior nitpicks left to do, but I reached my daily sanity
expenses limit again, and the faster these get in the less issues for
both me and others later. Also cleans some mess I caused by my blindness
last PR.

## Why It's Good For The Game

Saner spriters = better sprites

code/modules/mob_spawn/ghost_roles/mining_roles.dm

@@ -6,7 +6,7 @@
 	name = "malfunctioning cryostasis sleeper"
 	desc = "A humming sleeper with a silhouetted occupant inside. Its stasis function is broken and it's likely being used as a bed."
 	prompt_name = "a stranded hermit"
-	icon = 'icons/obj/lavaland/spawners.dmi'
+	icon = 'icons/obj/mining_zones/spawners.dmi'
 	icon_state = "cryostasis_sleeper"
 	outfit = /datum/outfit/hermit
 	you_are_text = "You've been stranded in this godless prison of a planet for longer than you can remember."
@@ -60,7 +60,7 @@
 	name = "cryostasis bed"
 	desc = "A humming sleeper with a silhouetted occupant inside. Its stasis function is broken and it's likely being used as a bed."
 	prompt_name = "a grumpy old man"
-	icon = 'icons/obj/lavaland/spawners.dmi'
+	icon = 'icons/obj/mining_zones/spawners.dmi'
 	icon_state = "cryostasis_sleeper"
 	outfit = /datum/outfit/hermit
 	you_are_text = "You've been hunting polar bears for 40 years now! What do these 'NaniteTrans' newcomers want?"
@@ -142,7 +142,7 @@
 	name = "preserved terrarium"
 	desc = "An ancient machine that seems to be used for storing plant matter. The glass is obstructed by a mat of vines."
 	prompt_name = "lifebringer"
-	icon = 'icons/obj/lavaland/spawners.dmi'
+	icon = 'icons/obj/mining_zones/spawners.dmi'
 	icon_state = "terrarium"
 	density = TRUE
 	mob_species = /datum/species/pod

code/modules/mob_spawn/ghost_roles/venus_human_trap.dm

@@ -2,7 +2,7 @@
 /obj/effect/mob_spawn/ghost_role/venus_human_trap
 	name = "flower bud"
 	desc = "A large pulsating plant..."
-	icon = 'icons/effects/spacevines.dmi'
+	icon = 'icons/mob/spacevines.dmi'
 	icon_state = "bud0"
 	mob_type = /mob/living/simple_animal/hostile/venus_human_trap
 	density = FALSE