Do we really need attachment sitemap?

We are running a wordpress website. It has sitemap_index.xml file & there are 3 sitemap files inside.

1. page-sitemap.xml
2. attachment-sitemap.xml
3. author-sitemap.xml

Attachment sitemap showing the images link. An unique URL has been created for every attachment and added into attachment sitemap. This sitemap is created by YoastSEO plugin. Is this really necessary?

submitted by /u/arul-k
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from Search Engine Optimization: The Latest SEO News https://www.reddit.com/r/SEO/comments/c54nq3/do_we_really_need_attachment_sitemap/>