chore: remove iso foreword

Author: arnoweiss

index.html

@@ -85,9 +85,6 @@ <h2>Status of this document</h2>
     </p>
 </section>
 
-<section class="notoc" data-include="specifications/common/foreword.md" data-include-format="markdown">
-</section>
-
 <section class="notoc" data-include="specifications/common/introduction.md" data-include-format="markdown">
 </section>