Remove redundant paragraph from conformance section.

Author: gkellogg

index.html

@@ -563,11 +563,6 @@ <h2>Syntax Tokens and Keywords</h2>
 </section>
 
 <section id="conformance">
-  <p>Conformance criteria are relevant to authors and authoring tool implementers. As well
-    as sections marked as non-normative, all authoring guidelines, diagrams, examples,
-    and notes in this specification are non-normative. Everything else in this
-    specification is normative.</p>
-
   <p>A <a>JSON-LD document</a> complies with this specification if it follows
     the normative statements in appendix <a href="#json-ld-grammar"></a>. JSON documents
     can be interpreted as JSON-LD by following the normative statements in