Do you remove all of the code and place just
<?php if ($block->hasSpecialPrice()): ?>
<span class="old-price sly-old-price no-display">
<?php /* @escapeNotVerified */ echo $block->renderAmount($priceModel->getAmount(), [
'display_label' => __('Regular Price'),
'price_id' => $block->getPriceId('old-price-' . $idSuffix),
'price_type' => 'oldPrice',
'include_container' => true,
'skip_adjustments' => true
]); ?>
</span>
<?php endif; ?>
Or do you just replace this section? Thanks,