Hi,
I realize this post is 5 months old, but I am having the same issue, and it would be great to solve.
Specifically, I create a post with a gallery of images. I leave the “Enter a link URL or click above for presets.” form field blank. However, on the ‘attachment page’, the image is clickable, and goes to an ugly image only page.
Is there any way to disable the link or set the link on the attachment page?