First of all, this is not a question of 'how to remove', it's a question of 'should I remove'.I've just noticed rel next and prev links on our single WordPress blogs. I'm not sure if they are new from an update, or if I have just never noticed them before.Our blogs do not relate to each other in the way of a large blog written over many pages. They are all individual, with the first not having anything to do with the next.My understanding of the rel next/prev tag is that they are used to link grouped pages together - like if you spread a single big blog over many pages. Or pagination on the WordPress archive pages.As this is not the case in any of our single blogs, I want to know if I should remove the rel next/prev as I fear it could be sending the wrong message to search engines.From my experience I would say it shouldn't be there, but as WordPress is the one adding it in, I thought I'd get some second opinions first.
Should I remove rel next/prev from a single WordPress article?
html;wordpress;blog;rel
Your understanding is correct. The sequential link types are for documents that are part of a sequence. I would only use it for blog posts that belong together ( Part 1,  Part 2), for a blog post that is paginated, or for blogs where the order of the posts matters (e.g., in a diary, where each day has its own post). Or in other words, only in cases where it can be expected that users want to read the next post.But there is no objective definition what would/wouldnt count as sequence. Using it for blog posts that arent really related (i.e., they just happen to be posted in that chronological order) doesnt seem too far off. As far as the semantics are concerned, I wouldnt expect any negative effect resulting from this.However, WHATWGs HTML Living Standard changed the next link type recently (this change might become part of W3Cs HTML 5.2, too). If it gets used with a link element, user agents should use a Resource Hint. This means that user agents should act as if the author also specified one of these link types: dns-prefetch, preconnect, prefetch, prerender. So depending on which resource hint a user agent chooses, it can cost bandwith, battery life, affect the performance, etc. So this would be one more reason to use the sequential link types only in cases where users can be expected to want to visit the next page. Using them for posts that dont really belong together could waste resources.