Removed useless sprintf, which resulted in removing additional code no longer used

Author: df2k2

app/code/Magento/Downloadable/Model/ResourceModel/Link.php

@@ -5,10 +5,6 @@
  */
 namespace Magento\Downloadable\Model\ResourceModel;
 
-use Magento\Catalog\Api\Data\ProductInterface;
-use Magento\Framework\App\ObjectManager;
-use Magento\Framework\EntityManager\MetadataPool;
-
 /**
  * Downloadable Product  Samples resource model
  *
@@ -17,11 +13,6 @@
  */
 class Link extends \Magento\Framework\Model\ResourceModel\Db\AbstractDb
 {
-    /**
-     * @var MetadataPool
-     */
-    private $metadataPool;
-
     /**
      * Catalog data
      *
@@ -210,10 +201,7 @@ public function getSearchableData($productId, $storeId)
             []
         )->join(
             ['cpe' => $this->getTable('catalog_product_entity')],
-            sprintf(
-                'cpe.entity_id = m.product_id',
-                $this->getMetadataPool()->getMetadata(ProductInterface::class)->getLinkField()
-            ),
+            'cpe.entity_id = m.product_id',
             []
         )->joinLeft(
             ['st' => $this->getTable('downloadable_link_title')],
@@ -234,16 +222,4 @@ protected function _createCurrency()
     {
         return $this->_currencyFactory->create();
     }
-
-    /**
-     * Get MetadataPool instance
-     * @return MetadataPool
-     */
-    private function getMetadataPool()
-    {
-        if (!$this->metadataPool) {
-            $this->metadataPool = ObjectManager::getInstance()->get(MetadataPool::class);
-        }
-        return $this->metadataPool;
-    }
 }