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/controllers/subsystem/spatial_gridmap.dm

@@ -44,7 +44,7 @@
 	client_contents = dummy_list
 	atmos_contents = dummy_list
 
-/datum/spatial_grid_cell/Destroy(force, ...)
+/datum/spatial_grid_cell/Destroy(force)
 	if(force)//the response to someone trying to qdel this is a right proper fuck you
 		stack_trace("dont try to destroy spatial grid cells without a good reason. if you need to do it use force")
 		return

code/controllers/subsystem/statpanel.dm

@@ -322,7 +322,7 @@ SUBSYSTEM_DEF(statpanels)
 	. = ..()
 	src.parent = parent
 
-/datum/object_window_info/Destroy(force, ...)
+/datum/object_window_info/Destroy(force)
 	atoms_to_show = null
 	atoms_to_images = null
 	atoms_to_imagify = null