Fix WebSocket connection error in VNC

- Remove wsProtocols: ['binary'] setting that was causing reserved bits error
- WebSocket extension negotiation was failing with 'reserved3 = 1'
- Use default WebSocket protocol negotiation instead

wssshd2/templates/vnc.html

@@ -343,8 +343,7 @@ function connect() {
         rfb = new RFB(document.getElementById('noVNC_screen'), wsUrl, {
             credentials: {},
             shared: true,
-            repeaterID: '',
-            wsProtocols: ['binary']
+            repeaterID: ''
         });
 
         rfb.addEventListener('connect', () => {