You would not be able, in Canada, to get a court order requiring a newspaper to unpublish something that was true. Our body of case law related to freedom of expression, defamation, and other things like that support that entirely. If you can't tell the newspaper not to publish it, not to make it available anymore, should you be able to tell an uninterested third-party search engine to not tell people that it exists?
On September 29th, 2016. See this statement in context.