You need to edit the php file found at httpdocs / wp-content / plugins / woocommerce / woocommerce-functions.php by adding this code at the bottom:
add_filter( 'woocommerce_product_tabs', 'custom_woo_remove_reviews_tab', 98);
function custom_woo_remove_reviews_tab($tabs) {
unset($tabs['reviews']);
return $tabs;
}