clean Unit

engine/world/Unit.cpp

@@ -209,8 +209,6 @@ void Unit::create_physics_objects()
 			const PhysicsActor& actor = pr->actor(i);
 
 			ActorId id = m_world.physics_world()->create_actor(pr, i, m_scene_graph, m_scene_graph.node(actor.node));
-			m_world.physics_world()->set_filtering(id, actor.group, actor.mask);
-			
 			add_actor(actor.name, id);
 		}
 	}