Hi,
If you want to remove the link to the product page only on the image, the best is to edit the view "product / listing_img_title" (I think you're using this one).
At the beginning you would find the block for "<!-- PRODUCT IMG -->".
There is in this block, the link to the product page, just for the image.
So you can remove the line "<a href="..." and the other line "</a>" and the link on the image would disappear.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.