.article-page__meta dt:contains("Submitted"),
.article-page__meta dt:contains("Submitted") + dd {
    display: none;
}

<script>
    document.querySelectorAll('.article-page__meta dt').forEach((dt) => {
        if (dt.textContent.trim() === 'Submitted') {
            dt.style.display = 'none';
            dt.nextElementSibling.style.display = 'none';
        }
    });
</script>