Fixes simple_animals not deleting properly (#24618)

* Fixes simple_animals not deleting properly

* Merging both /mob/living/New()

code/modules/mob/living/living.dm

@@ -18,6 +18,9 @@
 
 	immune_system = new (src)
 
+	on_resist = new(owner = src)
+	on_life = new(owner = src)
+
 /mob/living/Destroy()
 	for(var/mob/living/silicon/robot/mommi/MoMMI in player_list)
 		for(var/image/I in static_overlays)
@@ -42,6 +45,14 @@
 		qdel(immune_system)
 		immune_system = null
 
+	if(on_resist)
+		qdel(on_resist)
+		on_resist = null
+
+	if(on_life)
+		qdel(on_life)
+		on_life = null
+
 	. = ..()
 
 /mob/living/examine(var/mob/user, var/size = "", var/show_name = TRUE, var/show_icon = TRUE) //Show the mob's size and whether it's been butchered
@@ -794,18 +805,6 @@ Thanks.
 /mob/living
 	var/event/on_resist
 
-/mob/living/New()
-	. = ..()
-	on_resist = new(owner = src)
-	on_life = new(owner = src)
-
-/mob/living/Destroy()
-	. = ..()
-	qdel(on_resist)
-	on_resist = null
-	qdel(on_life)
-	on_life = null
-
 /mob/living/verb/resist()
 	set name = "Resist"
 	set category = "IC"

code/modules/mob/living/simple_animal/simple_animal.dm

@@ -520,8 +520,6 @@ var/global/list/animal_count = list() //Stores types, and amount of animals of t
 		emote("deathgasp", message = TRUE)
 
 	health = 0 // so /mob/living/simple_animal/Life() doesn't magically revive them
-	living_mob_list -= src
-	dead_mob_list += src
 	stat = DEAD
 	if(icon_dying && !gibbed)
 		do_flick(src, icon_dying, icon_dying_time)
@@ -536,8 +534,6 @@ var/global/list/animal_count = list() //Stores types, and amount of animals of t
 		for(var/butchering_type in L)
 			src.butchering_drops += new butchering_type
 
-	verbs += /mob/living/proc/butcher
-
 	..(gibbed)