Removed unused variables

Author: rodrigowebjump

app/code/Magento/Config/Test/Unit/Model/Config/Reader/Source/Deployed/DocumentRootTest.php

@@ -24,26 +24,11 @@ class DocumentRootTest extends \PHPUnit_Framework_TestCase
      */
     private $configMock;
 
-    /**
-     * @var PlaceholderInterface|\PHPUnit_Framework_MockObject_MockObject
-     */
-    private $placeholderMock;
-
-    /**
-     * @var Config\ScopeCodeResolver|\PHPUnit_Framework_MockObject_MockObject
-     */
-    private $scopeCodeResolverMock;
-
     /**
      * @var SettingChecker
      */
     private $documentRoot;
 
-    /**
-     * @var array
-     */
-    private $env;
-
     public function setUp()
     {
         $this->configMock = $this->getMockBuilder(DeploymentConfig::class)