This plugin, enables you to remove all inserted images from the content of o range of posts. In the plugins menu page you will find two textboxes where you can input the range of the posts IDs that you want to clear the images from its content, and click the Clear Images button to remove them instantly. A clear and straight forward approach, to remove images from the content of multiple posts that makes this process much easier. https://github.com/my-language-skills/simple-removal-of-posted-images