Typically, the product’s SKU, categories and tags it belongs to, will appear under the Add To Cart call to action button. This information in known as the product meta and this guide shows you how to remove this information from the single product template.
/**
* Snippet Name: WooCommerce Hide Product Meta
* Snippet Author: ecommercehints.com
*/
remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_meta', 40 );