title: Undo model namespacing causes error
body: <p>I had both namespaced controllers and models like this:</p>
  
  <p>controller: Modules::Insurances
  model: Modules::Insurances</p>
  
  <p>This worked fine, but I want to remove the namespaced model back to normal, but keep the namespaced controller. I have removed all the references to "Modules::" in the models and also in all the activerecord queries in the controller to the model. When I visit the page, it returns this error:</p>
  
  <pre><code>Expected /***/app/models/modules/ins_insurance.rb to define Modules::InsInsurance 
  </code></pre>
  
  <p>What should I do more to remove the namespaced model?</p>