Woocommerce Product Category Setting Problem. Need Help

Hi,

I am on the process to make beauty item shopping mall by wordpress.

By the way, I have a headache by this problem….

Details:

I made a page with product category slider widget.
http://www.thebeautyshop.co.nz/shop/cosmetics/
— To make this slide, I put the thumbnail image into each product category.
by this one, When I click the one category, ex) Skincare
screen is shown up by this format.
http://www.thebeautyshop.co.nz/product-category/cosmetics/skincare/

Point/ My needs
How can I remove the image in http://www.thebeautyshop.co.nz/product-category/cosmetics/skincare/ ..
I just want see product with product category click not thumnail image inside of product category.

Please help me…