Nikon is right.
The date/Time is now part of the picture file.
The quick software fix is to "crop" the picture, so that the date/time is cut out of the picture.
You will also cut out some part of the picture.
Someone experienced with PhotoShop software can usually remove it or mask it.
I got a Nikon S8000 about a year ago. I have never ever done any photo-editing, except rotating and cropping on Microsoft picture editor - which doesn't seem to have much else.
If the camera is set to record date etc. these appear red at the bottom within the photo. Nikon's instruction manual told me there is no way to remove them from the photo. But presumably you CAN do something on the computer-stored image.
What do you recommend for someone not yet into editing as immediate quick fix? For some it would be sufficient to make them unobtrusive, for some I might prefer total removal of dates info if possible.