Remove unused controller.

src/index.ejs

@@ -40,7 +40,7 @@
       </div>
     </nav>
 
-    <div class="container-fluid" ng-controller="MainController">
+    <div class="container-fluid">
       <div ng-view></div>
     </div>
 

src/js/app.js

@@ -66,9 +66,6 @@ var app = angular.module('accountant', [
 
 .run(function(editableOptions) {
     editableOptions.theme = 'bs3'; // bootstrap3 theme. Can be also 'bs2', 'default'
-})
-
-.controller('MainController', function() {
 });
 
 module.exports = app;