downgrade to kirby v3

kirby/config/blocks/gallery/gallery.php

@@ -1,10 +1,5 @@
-<?php
-/** @var \Kirby\Cms\Block $block */
-$caption = $block->caption();
-$crop    = $block->crop()->isTrue();
-$ratio   = $block->ratio()->or('auto');
-?>
-<figure<?= Html::attr(['data-ratio' => $ratio, 'data-crop' => $crop], null, ' ') ?>>
+<?php /** @var \Kirby\Cms\Block $block */ ?>
+<figure>
   <ul>
     <?php foreach ($block->images()->toFiles() as $image): ?>
     <li>
@@ -12,9 +7,4 @@ $ratio   = $block->ratio()->or('auto');
     </li>
     <?php endforeach ?>
   </ul>
-  <?php if ($caption->isNotEmpty()): ?>
-  <figcaption>
-    <?= $caption ?>
-  </figcaption>
-  <?php endif ?>
 </figure>