org-export-with-creator

org-export-with-creator is a variable defined in `ox.el'.
Its value is

comment

Documentation:
Non-nil means the postamble should contain a creator sentence.

The sentence can be set in `org-export-creator-string' and
defaults to "Generated by Org mode XX in Emacs XXX.".

If the value is `comment' insert it as a comment.

You can customize this variable.