https://wordpress.org/support/plugin/wp-410/
[HTTP 410 (Gone) responses] Support | WordPress.org
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https://www.open.ac.uk/blogs/LibraryNews/?p=498
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https://wordpress.org/support/topic/works-but-google-says-its-not-needed/
Works, But Google says its not needed - [HTTP 410 (Gone) responses] Review | WordPress.org
Oct 16, 2018 - Works, But Google says its not needed alfadelta (@alfadelta) 7 years, 6 months ago I removed this plugin based on help text from Google Webmaster Tools: If you...