Removed debug Karma options

Author: Claudio Mezzasalma

test/karma.conf.js

@@ -94,8 +94,6 @@ module.exports = function(config) {
 
     // report which specs are slower than 500ms
     // CLI --report-slower-than 500
-    reportSlowerThan: 500,
-
-    transport: ['websocket', 'polling']
+    reportSlowerThan: 500
   });
 };