custom background for woo commerce product pages

Hi Folks

I tried this work through in post https://kriesi.at/support/topic/custom-banner-image-on-enfold-woocommerce-product-pages/#post-560025. To bring a background image in on the product pages. on http://medievilnutrition.com.

It didn’t work for me so I deactivated and deleted the custom functions plugin and this:-

add_action('ava_after_main_container', 'add_banner_before_breadcrumb'); 
function add_banner_before_breadcrumb() {
	if ( is_product() )
	{
		echo '<h1 style="text-align: center;"><a href="http://www.yourwebsite.com" target="_blank">
<img border="0" alt="Banner Name" src="http://www.yourwebsite.com/wp-content/uploads/shop-banner-image.jpg" /></h1>';
	}
}

Now I am left with this line of code visible at the top of the site and am at a loss where it is and how to get rid of it (it also seems to be slowing the site down – can you help?

Thanks

Steve