Minor - Remove deprecated Response class in PHPUnit

tests/phpunit/classes/ResponseTest.class.php

@@ -1,40 +0,0 @@
-<?php
-/**
- * Generated by PHPUnit_SkeletonGenerator on 2012-10-01 at 14:44:09.
- */
-class ResponseTest extends PHPUnit_Framework_TestCase
-{
-    /**
-     * @var Response
-     */
-    protected $object;
-
-    /**
-     * Sets up the fixture, for example, opens a network connection.
-     * This method is called before a test is executed.
-     */
-    protected function setUp()
-    {
-        $this->object = new Response;
-    }
-
-    /**
-     * Tears down the fixture, for example, closes a network connection.
-     * This method is called after a test is executed.
-     */
-    protected function tearDown()
-    {
-    }
-
-    /**
-     * @covers Response::not_found
-     * @todo   Implement testNot_found().
-     */
-    public function testNot_found()
-    {
-        // Remove the following lines when you implement this test.
-        $this->markTestIncomplete(
-          'This test has not been implemented yet.'
-        );
-    }
-}