I'm working on a website and the previous developer disabled Related Products on the WooCommerce theme 'storefront' by adding the following line of code to functions.php: remove_action('woocommerce_after_single_product_summary', 'woocommerce_output_related_products', 20);

I have commented this out and checked the CSS for a display: none; on the related products container but it doesn't exist.

What else can I check to reactivate related products?