diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php b/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php
index 958c6f3..d584bc1 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php
@@ -130,16 +130,6 @@ public function serialize() {
   /**
    * {@inheritdoc}
    */
-  public function serialize() {
-    // Cleanup the connection, much like __destruct() does it as well.
-    if ($this->needsCleanup) {
-      $this->nextIdDelete();
-    }
-    $this->needsCleanup = FALSE;
-
-    return parent::serialize();
-  }
-
   public function __destruct() {
     if ($this->needsCleanup) {
       $this->nextIdDelete();