MC-18514: API functional test to cover filterable custom attributes in layered navigation

- review comments

Author: dthampy

dev/tests/integration/testsuite/Magento/Catalog/_files/products_for_relevance_sorting_rollback.php

@@ -4,15 +4,14 @@
  * See COPYING.txt for license details.
  */
 
-
 $objectManager = \Magento\TestFramework\Helper\Bootstrap::getObjectManager();
 /** @var \Magento\Framework\Registry $registry */
 $registry = $objectManager->get(\Magento\Framework\Registry::class);
 $registry->unregister('isSecureArea');
 $registry->register('isSecureArea', true);
 
 /** @var $category \Magento\Catalog\Model\Category */
-$category = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create(\Magento\Catalog\Model\Category::class);
+$category = $objectManager->create(\Magento\Catalog\Model\Category::class);
 $category->load(330);
 if ($category->getId()) {
     $category->delete();

dev/tests/integration/testsuite/Magento/Catalog/_files/products_with_layered_navigation_custom_attribute_rollback.php

@@ -25,7 +25,7 @@
     $attributeRepository->delete($attribute);
 }
 /** @var $product \Magento\Catalog\Model\Product */
-$objectManager = \Magento\TestFramework\Helper\Bootstrap::getObjectManager();
+$objectManager = Bootstrap::getObjectManager();
 
 $entityType = $objectManager->create(\Magento\Eav\Model\Entity\Type::class)->loadByCode('catalog_product');