Ok, you answered it here:
We’ve removed the clean up functions we had for the <head>. There simply is no SEO benefit and WordPress kept adding more stuff to the <head> anyway.
So there’s no seo benefit of removing 6 lines of crud from every html file?
Thanks for making this decision for me. I wish you and your crowd of yes men a good day, I just hope you haven’t done anything else to ruin mine?
Yes, they also removed Google+ from social tab…
You can put the following code in your functions file to replace the previous options:
remove_action( 'wp_head', 'rsd_link' );
remove_action( 'wp_head', 'wlwmanifest_link' );
remove_action( 'wp_head', 'wp_shortlink_wp_head' );
remove_action( 'template_redirect', 'wp_shortlink_header', 11 );
remove_action( 'wp_head', 'feed_links', 2 );
remove_action( 'wp_head', 'feed_links_extra', 3 );
