If you're referring to the Theme Fonts button in the Themes group of
the Page Layout ribbon, it can't be removed -- none of the built-in
ribbon groups can be altered.
If you're truly determined, get Patrick Schmid's RibbonCustomizer
add-in from
http://pschmid.net/office2007/ribboncustomizer. Use it to
remove the entire built-in Themes group and replace it with your own
group that omits the offending button. If this seems to you to be too
much trouble, then do what most people do -- just ignore the things
you don't use.
--
Regards,
Jay Freedman
Microsoft Word MVP
Email cannot be acknowledged; please post all follow-ups to the
newsgroup so all may benefit.