Cleans up some extra args in Destroy() (#80642)

## About The Pull Request

After https://github.com/tgstation/tgstation/pull/80628, these shouldn't
be needed anymore right?

## Why It's Good For The Game

Cleans up some vestigial code

## Changelog
EDIT: Not player-facing.

code/modules/tutorials/tutorials/drop.dm

@@ -12,7 +12,7 @@
 	var/atom/movable/screen/drop_preview
 	var/obj/last_held_item
 
-/datum/tutorial/drop/Destroy(force, ...)
+/datum/tutorial/drop/Destroy(force)
 	last_held_item = null
 	user.client?.screen -= drop_preview
 	QDEL_NULL(drop_preview)

code/modules/tutorials/tutorials/switch_hands.dm

@@ -19,7 +19,7 @@
 
 	hand_to_watch = (user.active_hand_index % user.held_items.len) + 1
 
-/datum/tutorial/switch_hands/Destroy(force, ...)
+/datum/tutorial/switch_hands/Destroy(force)
 	user.client?.screen -= hand_preview
 	QDEL_NULL(hand_preview)