Turn physics debugging back off

src/hub.html

@@ -33,7 +33,7 @@
     <a-scene
         renderer="antialias: true"
         networked-scene="adapter: janus; audio: true; debug: true; connectOnLoad: false;"
-        physics="gravity: -6;"
+        physics="gravity: -6; debug: false;"
         mute-mic="eventSrc: a-scene; toggleEvents: action_mute"
         freeze-controller="toggleEvent: action_freeze"
         personal-space-bubble="debug: false;"