MAGETWO-59305: [ElasticSearch] Layered navigation contains filters for out of stock products

- Unskip tests

Author: vital-pantsialeyeu

dev/tests/integration/testsuite/Magento/Elasticsearch/SearchAdapter/AdapterTest.php

@@ -314,7 +314,6 @@ public function testAdvancedSearchDateField($rangeFilter, $expectedRecordsCount)
      */
     public function testAdvancedSearchCompositeProductWithOutOfStockOption()
     {
-        $this->markTestSkipped('Filter of composite products with Out of Stock child not supported till MAGETWO-59305');
         parent::testAdvancedSearchCompositeProductWithOutOfStockOption();
     }
 
@@ -326,7 +325,6 @@ public function testAdvancedSearchCompositeProductWithOutOfStockOption()
      */
     public function testAdvancedSearchCompositeProductWithDisabledChild()
     {
-        $this->markTestSkipped('Filter of composite products with Out of Stock child not supported till MAGETWO-59305');
         // Reindex Elastic Search since date_attribute data fixture added new fields to be indexed
         $this->reindexAll();
         parent::testAdvancedSearchCompositeProductWithDisabledChild();