"Despite suit, Google News still indexing AFP content" from IDG News Service covers Agence France Press content still appearing in Google News after the company said last year that it would no longer carry AFP content, following a copyright infringement lawsuit. The problem seems to be that AFP content is distributed by other publishers, such as the New York Times.
There's no foolproof way for Google to flag these articles as AFP content and thus remove them. Honestly, it's down to AFP itself to teach its distributors to learn out to use the meta robots tag to flag this content as not to be indexed.
Then again, I'm sure that over time, the situation will resolve itself. After all, if AFP is stupid enough not to understand the value of search traffic, smarter publications that do understand this like the New York Times itself will overtake it as people turn to them for content online.