title: Coverage show test get_serializer_class as untested
body: <p>Use coverage  to show what have to be covered by tests drf views. And coverage show that all view is tested ok (cover by unittest + dango client API)</p>
  
  <p>But coverage shows that this part need to be covered:</p>
  
  <pre><code>def get_serializer_class(self): 
      return self.serializer_class ` 
  </code></pre>
  
  <p>I think that that code possible to delete as it useless (it is not my code):)</p>
  
  <p>Any idea how to cover that past of code in <code>GenericAPIView</code>? Thx for any help</p>