Removed error sound effect

app/client/services/buffer.js

@@ -31,7 +31,6 @@ module.exports = function(socket, sound) {
     }
     $('#buffer').append('<span style="color:#D62D18;">[i] Error: ' + error + '</span><br>');
     $('#buffer').scrollTop($('#buffer').prop('scrollHeight'));
-    sound.error();
   });
 
   socket.on('bot:message', function(string) {

app/client/services/sound.js

@@ -4,14 +4,10 @@ module.exports = function() {
   var error     = "error";
 
   createjs.Sound.registerSound("/sounds/connected.mp3", connected);
-  createjs.Sound.registerSound("/sounds/error.mp3", error);
 
   return {
     connected: function() {
       createjs.Sound.play(connected);
-    },
-    error: function() {
-      createjs.Sound.play(error);
     }
   };