updated Porcupine 2.0 ww files to 2.1 (removed old)

Author: fquirin

modules-demo.html

@@ -104,7 +104,7 @@ <h1>SEPIA Web Audio Processor - Module Tests</h1>
 		<div><label>Porcupine Version:</label><select id="porcupineVersionSelect" onchange="setPorcupineVersion(+this.value);">
 			<option value="14" selected>v1.4</option>
 			<option value="19">v1.9</option>
-			<option value="20">v2.0 (en)</option>
+			<option value="21">v2.1 (en)</option>
 		</select></div>
 		<div style="display: inline-flex; align-items: center;"><label>Gate:</label><div id="wakeWordGateState"></div><label></label></div>
 		<div><label>Control:</label><button onclick="wakeWordSetGate('open');">Listen</button><button onclick="wakeWordSetGate('close');">Stop</button><label></label></div>