Issue #3160169 by jameszhang023: Unused variable $a in...

Issue #3160169 by jameszhang023: Unused variable $a in \Drupal\taxonomy\Plugin\Validation\Constraint\TaxonomyTermHierarchyConstraintValidator::validate()

core/modules/taxonomy/src/Plugin/Validation/Constraint/TaxonomyTermHierarchyConstraintValidator.php

@@ -60,7 +60,6 @@ public function validate($entity, Constraint $constraint) {
     $new_parents = array_column($entity->parent->getValue(), 'target_id');
     $original_parents = array_keys($term_storage->loadParents($entity->id())) ?: [0];
     if (($is_pending_revision || $ancestor_is_pending_revision) && $new_parents != $original_parents) {
-      $a = 1;
       $this->context->buildViolation($constraint->message)
         ->atPath('parent')
         ->addViolation();