Remove leftover note-to-self CREF

which probably should have been an XML comment anyway

Author: handrews

jsonschema-hyperschema.xml

@@ -1904,13 +1904,6 @@ Link: <https://api.example.com/trees/1/nodes/456> rev=up
                 </t>
             </section>
             <section title="Collections">
-                <t><cref>
-                    Reciprocal collection/item relations
-                    Pagination: fixed links vs jumping to an arbitrary offset
-                    Using "anchorPointer" and "templatePointers"
-                    Discovering ordered links
-                    Multiple self links (for the collection and each item)
-                </cref></t>
                 <t>
                     In many systems, individual resources are grouped into collections.  Those
                     collections also often provide a way to create individual item resources with