MC-18332: Remove MySQL Search Engine

- fixing tests

Author: cpartica

app/code/Magento/CatalogSearch/Test/Unit/Model/ResourceModel/EngineTest.php

@@ -26,16 +26,6 @@ class SwitcherUsedInFulltextTest extends \PHPUnit\Framework\TestCase
      */
     protected $indexer;
 
-    /**
-     * @var \Magento\CatalogSearch\Model\ResourceModel\Engine
-     */
-    protected $engine;
-
-    /**
-     * @var \Magento\CatalogSearch\Model\Fulltext
-     */
-    protected $fulltext;
-
     /**
      * @var \Magento\Search\Model\QueryFactory
      */
@@ -93,10 +83,6 @@ protected function setUp()
         );
         $this->indexer->load('catalogsearch_fulltext');
 
-        $this->engine = $objectManager->get(
-            \Magento\CatalogSearch\Model\ResourceModel\Engine::class
-        );
-
         $this->queryFactory = $objectManager->get(
             \Magento\Search\Model\QueryFactory::class
         );