Hello, @JCSC.
At this time, there isn't a way to remove the time stamp in the upper right-hand corner of the Deposit Summary Report in QuickBooks Desktop. I'm going to submit feedback to our Product Development Team about having the option to have it hidden. You can see the changes and what's coming to QuickBooks by visiting our Blog!
If you have additional questions or concerns, don't hesitate and leave me a Reply. Have a great day!