audio-player: removed unused elements

cmd/audio-player/index.html

@@ -12,7 +12,6 @@
         <div class="jumbotron">
             <div class="container-fluid">
                     <input type="file" id="input">
-                    <textarea id="content"></textarea>
             </div>
         </div>
     </body>

cmd/audio-player/main.js

@@ -6,9 +6,9 @@ function playFile() {
     const input = event.target.files[0]
 
     const reader = new FileReader()
-    reader.onload = event => playData(event.target.result) // desired file content
+    reader.onload = event => playData(event.target.result)
     reader.onerror = error => reject(error)
-    reader.readAsArrayBuffer(input) // you could also read images and other binaries
+    reader.readAsArrayBuffer(input)
 }
 
 function playData(array){