Replace name of page with the one you want to skip:
<?php foreach($site->breadcrumb() as $crumb): ?>
<?php if($crumb->is(page('blog'))) continue; ?>
<a class="breadcrumb-item" href="<?= $crumb->url() ?>">
<span class="breadcrumb-label"><?= $crumb->title()->html() ?></span>
<?php endforeach; ?>
Edit: this completely removes the
blog page from the breadcrumb navigation, though, even if the blog page is active.