Removed "Helpful model descriptions" section

Not a big fan of having hacky code in the docs

docs/core_components/pages/creating_pages.rst

@@ -165,32 +165,3 @@ Make your model names more friendly to users of Wagtail using Django's internal
             verbose_name = "Homepage"
 
 When users are given a choice of pages to create, the list of page types is generated by splitting your model names on each of their capital letters. Thus a ``HomePage`` model would be named "Home Page" which is a little clumsy. ``verbose_name`` as in the example above, would change this to read "Homepage" which is slightly more conventional.
-
-
-Helpful model descriptions
---------------------------
-
-As your site becomes more complex users may require some prompting in deciding which content type to use when creating a new page. Developers can add a description to their Models by extending Django's internal model ``Meta`` class.
-
-Insert the following once at the top of your ``models.py``:
-
-.. code-block:: python
-
-    import django.db.models.options as options
-    options.DEFAULT_NAMES = options.DEFAULT_NAMES + ('description',)
-     
-
-Then for each model as necessary, add a description option to the model ``Meta`` class
-
-
-.. code-block:: python
-
-    class HomePage(Page):
-        ...
-        
-        class Meta:
-            description = "The top level homepage for your site"
-            verbose_name = "Homepage"
-
-
-(This method can be used to extend the Model Meta class in various ways however Wagtail only supports the addition of a ``description`` option).