I have a little different issue since everyone wants to show post thumbnails but I want to disable it. The reason is I already have a plugin to control excerpt that shows thumbnail. However, by default atahualpa is also showing the post thumbnail in excerpts making it double post thumbnails. I want to completely disable the post thumbnail throught atahaulpa. I tried to set image height and width to 0 in manage thumbnail section to no avail.
How can I do it??