Hide the column hikashop_product_description title hikashop_variants_table_th

Hi,

HikaShop will only display that column in the variants listing if at least one variant has some text in it.
So if you don't fill the description in the variants like you say you're doing, you just shouldn't see that column.
So I suspect that you must have your editor adding some empty HTML tags to the description of the variants when you edit them and you're not aware of it.
Edit the variants of the product and switch the editor to HTML mode and you'll see if the description is really empty or not.

Now, you can also use CSS to hide the column, like that:
.hikashop_product_description.hikashop_variants_table_th, .hikashop_product_description_row{ display: none; }
But I would recommend to clean your variants descriptions.