deadish said:
Hmmm. Strange that the quoted section in Wikipedia
has no citation. Anyway, as far as I can tell that text is plain wrong; you can only be removed for non-use if you, ahem, don't use it, or fail to renew the registration and certify continuous use (every 5 years in the U.S.).
The closest to a penalty for non-enforcement is "Defense of Laches" in which someone argues that they can keep using your trademark despite its infringement because you took too long to inform them of the infringement, but it only applies to the specific defendant, it can't invalidate the trademark for other defendants or delist the trademark.