Comments, small bugfixes removed legacy elements

marl_factory_grid/environment/entity/wall.py

@@ -6,6 +6,12 @@ from marl_factory_grid.utils.utility_classes import RenderEntity
 class Wall(Entity):
 
     def __init__(self, *args, **kwargs):
+        """
+        TODO
+
+
+        :return:
+        """
         super().__init__(*args, **kwargs)
 
     @property