further cleanup

plugins/c9.analytics/mock_analytics.js

@@ -16,8 +16,7 @@ function plugin(options, imports, register) {
             track: function() {},
             identify: function() {},
             logClean: function() {},
-            trackClean: function() {},
-            identifyClean: function() {},
+            trackClean: function() {}
         }
     });
 }