With inspiration from the download snippet in the image download notebook, i made a tool that allows you to delete the images before you download them. By running it you can click on the images you want to exclude (or click again to include them again) and they will not appear in the list of urls.
You can find the snippet here.
If you want it to be activated as a button, i made it into a bookmarklet, unfortunately github does not allow js in links, so i added it to my blog instead. You can drag it to your bookmarks bar and press it to activate it on on the search page.
To get the urls, you click the popup and you can copy paste the text.
This tool is not very useful if yo have many classes to process, but for few classes it seems handy.