Is there an easier way to remove this plot stamp?

I’m currently using Autocad 2008, one of my works colleagues received an emailed drawing that was created with an educational version of Autocad. Any time you ‘cut & paste’ or use the drawing to make another, you inherit the plot stamp.

I’ve been on numerous forums, and no one really has a quick fix.
The only way I’ve figured out how to get rid of it is to save the file in DXF format, rename it as a .TXT file, cut and paste the contents into a fresh .TXT file, and then rename it as .DXF and re-open it with Autocad.

Suffice to say that this method is as long winded as the above paragraph.

Does anybody have a quick fix?