There is no option to update/remove any asset that has already been sent for revision. If you have uploaded a duplicated resource or a design that has errors, our team will reject these when they review the material.
After that you will be able to fix the issues and resubmit the product again.
If you need to remove a product due to a major issue, please contact us and let us know what is the reason why the image cannot be published so we can ask our team to look into it