Hi Paul-2TA,
Thank you for using the Support Forum. You cannot remove the blank page from the preview. You can call support and ask to create a FER (feature enhancement request) which will be escalated to the product team for consideration in a firmware upgrade or futurw product. As for Adobe you would need to check with there help center to see if or how to delete the blank page from the document.
Please consider contacting your support centre for further assistance.