Dead Writers Society

Light and fast wp_head() cleaner. Just activate it and all unnecessary code will be deleted from site header section. It will improve loading speed of your website.
This plugin will remove:
<ul>
<li>WordPress version</li>
<li>shortlink</li>
<li>Really Simple Discovery link</li>
<li>RSS feed links</li>
<li>all extra RSS feed links</li>
<li>wlwmanifest.xml</li>
<li>meta rel=dns-prefetch href=//s.w.org</li>
<li>the next and previous post links</li>
<li>Emoji icons</li>
<li>WordPress REST API</li>
<li>oEmbed</li>
</ul>
Feeds (RSS, RSS2, Atom & RDF) and comments feeds will be disabled and redirected to home page for security reasons.

Nietzsche – WP Head Cleaner

This plugin cleans up the wp_head() and removes unnecessary code.

WP Scripts Customizer provides you with two fields that will output to the head section of your site before the closing head tag and just before the closing body tag. These will appear on every page of the site and are a great way to add analytic code, Google Font and other scripts. Only user with unfiltered_html capability that able to access these fields. unfiltered_html allows you to post HTML markup or even JavaScript code. Developed by <a href="http://themehall.com" title="themehall" rel="nofollow ugc">themehall</a>

WP Scripts Customizer

WP Scripts Customizer allows to enter scripts you would like output to head and footer of your WordPress theme page via WordPress Theme customizer.

Nietzsche – WP Head Cleaner vs WP Scripts Customizer