To remove pages from Google, add a "noindex" tag to the page HTML or use a 410...

https://wiki-cafe.win/index.php/How_Long_Does_It_Take_for_Noindex_to_Remove_a_Page_from_Google%3F

To remove pages from Google, add a "noindex" tag to the page HTML or use a 410 status code to signal permanent deletion. These methods tell search engines to drop the content from their index