already at oldest change - how to suppress this message

I recently got a new laptop, so I decided I would install gvim80 after using gvim73 for many years.
As an old Unix user from the 70s onward, I have quite a lot of customization, and when I discovered Gvim, my customization quadrupled.
I finally have my new machine running gvim about the same as before. I had to set the guifont, but most everything else worked out. However, I keep getting the message "Already at oldest change" when I open a file. I am guessing this is related either to version control (which I handle independently when I need it) or some sort of temporary backup file (which I have turned off, at least in previous customizations).
How do I turn off this message?!? I have browsed through the possible settings, and have found nothing yet. Help, please...

--
--
You received this message from the "vim_use" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php

---
You received this message because you are subscribed to the Google Groups "vim_use" group.
To unsubscribe from this group and stop receiving emails from it, send an email to vim_use+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.