LayoutWithoutLabel.php

<?php

declare (strict_types=1);
namespace Drupal\layout_builder_test\Plugin\Layout;

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Layout\Attribute\Layout;
use Drupal\Core\Layout\LayoutDefault;
use Drupal\Core\StringTranslation\TranslatableMarkup;

/**
 * Layout plugin without a label configuration.
 */
class LayoutWithoutLabel extends LayoutDefault {
  
  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [];
  }
  
  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    return $form;
  }
  
  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
  }

}