remove redundant spawner icon decls (#28937)

code/game/objects/effects/spawners/random/pool/misc_pools.dm

@@ -3,7 +3,6 @@
 	available_points = 0
 
 /obj/effect/spawner/random/pool/whiteship_mob
-	icon = 'icons/effects/random_spawners.dmi'
 	icon_state = "giftbox"
 	spawn_pool_id = "whiteship_mobs_spawn_pool"
 	unique_picks = TRUE

code/game/objects/effects/spawners/random/pool/pool_spawner.dm

@@ -1,8 +1,5 @@
 /// A random spawner managed by a [/datum/spawn_pool].
 /obj/effect/spawner/random/pool
-	icon = 'icons/effects/random_spawners.dmi'
-	icon_state = "loot"
-
 	/// How much this spawner will subtract from the available budget if it
 	/// spawns. A value of `-1` (i.e., not setting the value on a subtype)
 	/// does not attempt to subtract from the budget. This is useful for

code/game/objects/effects/spawners/random/pool/space_loot.dm

@@ -3,8 +3,6 @@
 	available_points = 1700
 
 /obj/effect/spawner/random/pool/spaceloot
-	icon = 'icons/effects/random_spawners.dmi'
-	icon_state = "giftbox"
 	spawn_pool_id = "space_loot_spawn_pool"
 	record_spawn = TRUE