Moree unarmed fixes (#17192)

* Fixes attacking without arms.

- Makes it so you can attack without hands
- Also removes an unused attack_paw
- Makes the attack_hand code less garbage
- Fixes grabbing a buckled entity to cause you to be perma-slowed

* Fixes your head from bleeding to death with headbutts

code/modules/power/antimatter/computer.dm

@@ -59,9 +59,6 @@
 /obj/machinery/computer/am_engine/attack_ai(var/mob/user as mob)
 	return src.attack_hand(user)
 
-/obj/machinery/computer/am_engine/attack_paw(var/mob/user as mob)
-	return src.attack_hand(user)
-
 /obj/machinery/computer/am_engine/attack_hand(var/mob/user as mob)
 	if(..())
 		return

code/modules/power/pacman2.dm

@@ -104,9 +104,6 @@
 	attack_ai(mob/user as mob)
 		interact(user)
 
-	attack_paw(mob/user as mob)
-		interact(user)
-
 	proc
 		interact(mob/user)
 			if (get_dist(src, user) > 1 )