Hi foremanfamilyattic,
To remove the unwanted images in your active listing, please proceed with the following steps:
1) Locate your listing in your Saved Listings folder, make any necessary changes(remove unwanted images), and save.
2)Check the box next to your updated listing in your Saved Listings folder and click the “Get html” button.
3) Copy the html in the popup box.
4) Locate the item on eBay and click the "Revise Item" button.
5) Click "Edit Description" then click the "Enter your own html" tab.
6) Paste the copied html in place of what's there and save your changes.
-Mike