Shop Without Product Images

If for some specific reason your business requires no product images nor image placeholder (this shows on shop/category pages and the single product page when no featured image is added).

remove_action( 'woocommerce_before_single_product_summary', 'woocommerce_show_product_images', 20 );

remove_action( 'woocommerce_before_shop_loop_item_title', 'woocommerce_template_loop_product_thumbnail', 10 );