The options in the Xerox Global PCL 6 driver don't seem to provide an option for disabling the banner sheet. Instead, the easiest option is to disable the banner sheet in the copier properties.
Go to the IP address for the copier, click Login and enter the credentials (default is admin/1111).
Click Properties across the top
Click Services up the left hand side
Click the Printing dropdown
Click Print Mode
Choose No for Print Banner Sheets