remove schemata appendix

graphics-aria/index.html

@@ -1159,15 +1159,6 @@ <h1>States and Properties</h1>
 	which could alert the user that a change has occurred.</p>
 
 	</section>
-<section class="appendix informative" id="a_schemata">
-	<h1>Schemata</h1>
-	<p>WAI-ARIA attributes are natively incorporated into HTML since <a href="https://www.w3.org/TR/html5/">HTML 5</a>. Official support for WAI-ARIA in HTML is provided in that and subsequent HTML specifications.
-    WAI-ARIA attributes are natively incorporated into SVG by the <a href="https://www.w3.org/TR/SVG2/">SVG 2</a> specification.
-    </p>
-	<p class="ednote">Validation support for the roles defined in this module will be added once the specification reaches recommendation.</p>
-	<p>For information on incorporating WAI-ARIA into other grammars, refer to <a href="https://www.w3.org/TR/wai-aria-1.1/#a_schemata">Appendix A</a> of the ARIA 1.1 specification [[!WAI-ARIA-1.1]].</p>
-	<p class="ednote">Review whether any additional schemata are necessary for this module.</p>
-</section>
 <section class="appendix" id="changelog">
 	<h2>Change Log</h2>
 <p>The full <a href="https://github.com/w3c/graphics-aria/commits/master/index.html">commit history to WAI-ARIA Graphics Module 1.0</a> is available.</p>