classes are added twice when selecting a new godot class enum

[yankscally]

the old class is not cleaned up from the objects data/attributes (also lots of junk/mismatched data)

"class" is also incorrect. should be "Teleporter"

			"extras":{
				"collision_types":{},
				"godot_class":2,
				"collision_layers":{},
				"collision_mask":{},
				"godot_class_mover_props":{
					"active":1,
					"target_offset":[
						0.0,
						0.0,
						0.0
					]
				},
				"class":"Mover",
				"godot_class_teleporter_props":{
					"target_local":{},
					"cooldown_timer":{}
				}
			},