Issue #3210888 by longwave: Undefined static method Drupal\Core\Database\Connection::serialize()

core/lib/Drupal/Core/Database/Driver/mysql/Connection.php

@@ -200,19 +200,6 @@ public static function open(array &$connection_options = []) {
     return $pdo;
   }
 
-  /**
-   * {@inheritdoc}
-   */
-  public function serialize() {
-    // Cleanup the connection, much like __destruct() does it as well.
-    if ($this->needsCleanup) {
-      $this->nextIdDelete();
-    }
-    $this->needsCleanup = FALSE;
-
-    return parent::serialize();
-  }
-
   /**
    * {@inheritdoc}
    */