Delete or Change Image Links on WordPress
To modify the URL that your images point to, navigate to the editor window for the page or post where the images are located and click the image that you want to work on. When clicked, the image will become “shaded over” and two icons will appear in the top right corner. The left icon will open the image editor pane. The left icon will delete the image.
When you click the left icon the image editor pops up. To modify or remove the image link, replace or delete the URL located in the “Link URL” field.