Deleting WP-Ecommerce files

We moved from WP-ecommerce to WooCommerce. However there are some database tables on our server that seem to be left over from the WP-ecommerce install. Can anyone confirm that I can safely delete these tables now that we have deleted the Plugins?

wp_wpsc_also_bought
wp_wpsc_cart_contents
wp_wpsc_cart_item_meta
wp_wpsc_checkout_forms
wp_wpsc_claimed-stock
wp_wpsc_coupon_codes
wp_wpsc_currency_list
wp_wpsc_download_status
wp_wpsc_meta
wp_wpsc_product_rating
wp_wpsc_purchase_logs
wp_wpsc_region_tax
wp_wpsc_submitted_form
wp_wpsc_visitors
wp_wpsc_vistor_meta