Fixes crutches crippling you and giving infinite speedboosts (tgstati…

…on#83660)

Fixes tgstation#83646 

Fixes crutches setting your legs to null whenever you pick them up or
drop them
Fixes slowdown reduction on crutches being permanent (this was hard to
notice because they instantly cripple you)

:cl:
fix: fixes touching a crutch permanently crippling you
fix: fixes crutches giving permanent speedboosts even when dropped
/:cl:

code/game/objects/items/weaponry.dm

@@ -521,12 +521,10 @@ for further reading, please see: https://github.com/tgstation/tgstation/pull/301
 
 /obj/item/cane/proc/movement_support_add(mob/living/user)
 	RegisterSignal(user, COMSIG_CARBON_LIMPING, PROC_REF(handle_limping))
-	user.set_usable_legs()
 	return TRUE
 
 /obj/item/cane/proc/movement_support_del(mob/living/user)
 	UnregisterSignal(user, list(COMSIG_CARBON_LIMPING))
-	user.set_usable_legs()
 	return TRUE
 
 /obj/item/cane/proc/handle_limping(mob/living/user)
@@ -565,8 +563,8 @@ for further reading, please see: https://github.com/tgstation/tgstation/pull/301
 	. = ..()
 	if(!.)
 		return
-	user.update_usable_leg_status()
 	UnregisterSignal(user, list(COMSIG_LIVING_LIMBLESS_SLOWDOWN, COMSIG_CARBON_LIMPING))
+	user.update_usable_leg_status()
 	REMOVE_TRAIT(user, TRAIT_WADDLING, REF(src))
 
 /obj/item/cane/crutch/proc/handle_slowdown(mob/living/user, limbless_slowdown, list/slowdown_mods)