how to remove attached images from nodes (page, story etc.)?

I installed the image module and the image_attach that comes with it.

I used the image_attach on a page to add an image to the content. That works.

but now I want to get rid of that image again - how do I do that? I see no option/button whatever to remove an attached image?

Question: how do I remove an attached image from a content node?

thanks
Jens