Yes, it is possible to hide the AppStatusTrialRenewHeaderBar on the Upload Page. To do this, please raise a support case with Satrang's support team by visiting the following link: Support Ticket.
PS: View Drag, Drop & Upload Files to Amazon S3, a Salesforce AppExchange app for moving files from Salesforce to Amazon S3: https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3000000B5ZPqEAN