Make changes according to the code review.

Author: oleksandrkravchuk

dev/tests/static/framework/Magento/TestFramework/Dependency/PhpRule.php

@@ -79,6 +79,7 @@ class PhpRule implements RuleInterface
      * @var array
      */
     private $whitelists;
+
     /**
      * @var ClassScanner
      */
@@ -102,7 +103,6 @@ public function __construct(
     ) {
         $this->_mapRouters = $mapRouters;
         $this->_mapLayoutBlocks = $mapLayoutBlocks;
-        $this->_namespaces = implode('|', \Magento\Framework\App\Utility\Files::init()->getNamespaces());
         $this->pluginMap = $pluginMap ?: null;
         $this->routeMapper = new RouteMapper();
         $this->whitelists = $whitelists;

dev/tests/static/framework/Magento/TestFramework/Dependency/Reader/ClassScanner.php

@@ -7,6 +7,8 @@
 
 namespace Magento\TestFramework\Dependency\Reader;
 
+use Magento\Setup\Module\Di\Code\Reader\FileClassScanner;
+
 /**
  * Search classes in file by path.
  */
@@ -42,7 +44,7 @@ public function getClassName(string $filePath): string
      */
     private function loadClassName(string $filePath): string
     {
-        $scanner = new \Magento\Setup\Module\Di\Code\Reader\FileClassScanner($filePath);
+        $scanner = new FileClassScanner($filePath);
         return $scanner->getClassName();
     }
 }