Small navigaition bar

That navigation bar is called “breadcrumbs”. WooCommerce gives us a code snippet to remove them on this page:
https://docs.woocommerce.com/document/customise-the-woocommerce-breadcrumb/

/**
 * Remove breadcrumbs for Storefront theme
 */
add_action( 'init', 'wc_remove_storefront_breadcrumbs');

function wc_remove_storefront_breadcrumbs() {
  remove_action( 'storefront_before_content', 'woocommerce_breadcrumb', 10 );
}

The code goes in functions.php for your child theme or you can try a snippets plugin.

We haven’t heard back from you in a while, so I’m going to mark this as resolved – if you have any further questions, you can start a new thread.