Issue #2080625 by areke, mrsinguyen: Remove unused local variables for the field module.

core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Plugin/Field/FieldWidget/TestFieldWidgetMultiple.php

@@ -58,7 +58,7 @@ public function settingsSummary() {
    */
   public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, array &$form_state) {
     $values = array();
-    foreach ($items as $delta => $item) {
+    foreach ($items as $item) {
       $values[] = $item->value;
     }
     $element += array(