metadata in product

Hi,

In a specific product page, under Product Details, there is a tab that says ‘metadata’.

It has one that says..

Name: slider_slider
Value: a:0:{}

and it is showing up in the website too under the product. Even when i deleted it, refresh the product editing page, it’s still there.

how do i remove that?

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