simplify viewer model object

Author: Licini

src/compas_model/viewer/modelobject.py

@@ -1,21 +1,6 @@
 from compas_model.scene.modelobject import ModelObject as BaseModelObject
-from compas_viewer.scene import Group
 from compas_viewer.scene import ViewerSceneObject
 
 
 class ModelObject(ViewerSceneObject, BaseModelObject):
-    def add_elements(self, **kwargs) -> None:
-        elements_group = self.add(Group(name="Elements", context=self.context))
-        contacts_group = self.add(Group(name="Contacts", context=self.context))
-
-        if self.show_elements:
-            for element in self.model.tree.rootelements:
-                element_kwargs = kwargs.copy()
-                element_kwargs["item"] = element
-                elements_group.add(**element_kwargs)
-
-        if self.show_contacts:
-            for contact in self.model.contacts():
-                contact_kwargs = kwargs.copy()
-                contact_kwargs["item"] = contact
-                contacts_group.add(**contact_kwargs)
+    pass