www.jeremyfrench.co.uk

Quoting marcvangend

Note that you can also hide the
revision information with the correct
settings; it will only show if the
"Create new revision" option is
checked, or if the current user has
the "administer nodes" permission

This would probably be the easiest option.

Note: wiki answer as it is not my own

See original: Answer by Jeremy French for Drupal 6 Hide Revision Information