fix: resolve parse errors in skinned_player_model and level_runtime

- Remove duplicate is_local variable in level_runtime.gd line 224
- Remove orphaned animation code from old load_model in skinned_player_model.gd
- Both files now compile cleanly

scenes/maps/level_runtime.gd

@@ -221,7 +221,6 @@ func _spawn_player(pid: int) -> CharacterBody3D:
 	head_pivot.params = player.params
 
 	# Authority configuration
-	var is_local = (pid == multiplayer.get_unique_id())
 	if is_local:
 		_player = player
 		player.set_physics_process(true)