Issue #2884223 by kiamlaluno, Dinesh18: In \Drupal\Core\State\State,...

Issue #2884223 by kiamlaluno, Dinesh18: In \Drupal\Core\State\State, parent::delete($key) is called twice

core/lib/Drupal/Core/State/State.php

@@ -86,7 +86,7 @@ public function setMultiple(array $data) {
    */
   public function delete($key) {
     parent::delete($key);
-    $this->deleteMultiple([$key]);
+    $this->keyValueStore->delete($key);
   }
 
   /**