simplify perfStats mithril code

app/views/user/perfStat.scala.html

@@ -5,8 +5,7 @@
 @embedJs {
 $(function() {
 LichessPerfStat(document.getElementById('perfStatContent'), {
-data: @Html(toJson(data)),
-i18n: {}
+data: @Html(toJson(data))
 });
 });
 }

ui/perfStat/src/ctrl.js

@@ -1,8 +0,0 @@
-var m = require('mithril');
-
-module.exports = function(env) {
-
-  this.data = env.data;
-
-  console.log(this.data);
-};

ui/perfStat/src/main.js

@@ -1,18 +1,13 @@
 var m = require('mithril');
 
-var ctrl = require('./ctrl');
-var view = require('./view');
-
 module.exports = function(element, opts) {
 
-  var controller = new ctrl(opts, element);
-
   m.module(element, {
     controller: function() {
-      return controller;
+      return {
+        data: opts.data
+      };
     },
-    view: view
+    view: require('./view')
   });
-
-  return controller;
 };