MAGETWO-90021: [Catalog] ProductAttributeMediaGalleryManagementInterface removes product from index, impossible to restore

- Change code back as there are no changes in 2.3.0 release.

Author: AlexeyManenok

dev/tests/api-functional/testsuite/Magento/GraphQl/Catalog/ProductViewTest.php

@@ -452,9 +452,7 @@ public function testQueryMediaGalleryEntryFieldsSimpleProduct()
             }
             short_description
             sku
-            small_image {
-                path
-            }
+            small_image
             small_image_label
             special_from_date
             special_price
@@ -485,7 +483,7 @@ public function testQueryMediaGalleryEntryFieldsSimpleProduct()
 QUERY;
 
         $response = $this->graphQlQuery($query);
-        
+
         /**
          * @var ProductRepositoryInterface $productRepository
          */