Custom Meta

How do I remove Custom meta from my products. I have tried deleting them in the product pages but to no avail. There are three tags on each…
sbg_selected_sidebar: a:1:{i:0;s:1:”0″;}
sbg_selected_sidebar_replacement: a:1:{i:0;s:1:”0″;}
slide_template:
You can see at nolimitsigns.com
Thank you!!

https://wordpress.org/plugins/wp-e-commerce/