Remove page types

Author: Matthew Hailwood

README.md

@@ -42,14 +42,4 @@ would result in something like "1 |18 |19 |24".
 ##OwnerPermissionedDataObject##
  - Allows data objects to inherit the access permissions from their attached relation parent
  - Relation parent defaults to `Page()`
- - If `static::$relationOwner` is set to `null` will fall back to asking the standard `Page` for permission
- 
-#Page Types Overview#
- 
-##ChildlessPage##
- - This class by itself does nothing 
- - The idea behind this class is that in your template for the main navigation a "ChildlessPage" should never be rendered as a dropdown
- 
-##NavHolderPage##
- - If accessed directly this page will return a 404
- - The idea behind this class is that it should act as a label for your site navigation and not be a page itself.
+ - If `static::$relationOwner` is set to `null` will fall back to asking the standard `Page` for permission