def delete_anchor(self, object_anchor):
        """Delete the anchor used to control the pose of the point cloud."""
        del self._anchor_to_point_coords[object_anchor]
        del self._anchor_to_point_colors[object_anchor]
        # del self._anchor_to_draw_callback_handler[object_anchor]
Delete the anchor used to control the pose of the point cloud.
photogrammetry_importer/opengl/draw_manager.py