Clean up the head

• PHP Performance Remove the emoji script and styles Stops WordPress from loading its emoji script and styles on every page. Every current browser shows emoji on its own.
• PHP Performance Remove the RSD and Windows Live Writer links Removes two links from the page head that only old desktop blogging apps used.
• PHP Performance Remove the shortlink Removes the ?p=123 shortlink from the page head and the HTTP headers.
• PHP Performance Remove the REST API and oEmbed links Removes the REST API and oEmbed discovery links from the page head and the HTTP headers. The REST API itself keeps working.
• PHP Performance Remove the extra feed links Keeps the main posts and comments feeds in the page head, and removes the links to category, tag, author, search and per-post comment feeds.
• PHP Performance Stop loading jQuery Migrate jQuery Migrate helps very old jQuery code run. Most sites don’t need it on the public pages; the admin keeps it.
• PHP Security Hide the WordPress version Removes the version number from the page head and feeds, and from the addresses of WordPress’s own scripts and styles.

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