Remove single product image in Woocommerce

I am trying to hide a single product image on a Woocommerce product page at http://thechildrensballet.com/product/test-tuition/. I have tried different solutions like adding this to my functions.php file:

remove_action( ‘woocommerce_before_single_product_summary’, ‘woocommerce_show_product_images’, 20 );

and adding this to my Custom CSS file:

.single .single-product-main-image.alpha {
display: none;
}

However, nothing I have tried is working. I would like the product content to stretch the full width of the page, since I don’t have an image I want to use. Thanks!