Vitor Carvalho

For those who do not need to have the Comments feature in WordPress (there are a lot of reasons), this plugin removes any trace of that existence in both wp-admin and front-end. 
Your theme must rely properly on the WordPress API for the front-end support. The tag must be present. 
Completely done through techniques based on both action hooks and CSS.
Doesn’t requires any configuration, just install and any trace of Comments will disappear.
NOTE: This does NOT play with the core, so you are able to update both plugins and WordPress without any trouble.
<h4>Provided Custom Hooks</h4>
This plugin provides 4 custom hooks you may play if you need more substance in your theme.
<pre><code>add_action( 'hide_comments_post_types', 'my_hide_comments_post_types' ); to change the list of post types to be processed by the plugin. Comments will be removed from all listed post types.
add_action( 'hide_comments_css', 'my_hide_comments_css' ); to add arbitrary CSS to hide comment's stuff from your theme.
add_action( 'hide_comments_template_comments_path', 'my_hide_comments_template_comments_path' ); the default path is the empty file template-comments.php located in the same dir of this plugin. Just modify the path to your own file if you want to return anything else.
add_action( 'hide_comments_dashboard_right_now', 'my_hide_comments_dashboard_right_now' ); if true is returned, the discussion table of dashboard right now widget will be hidden. False otherwise. Defaults to true.
</code></pre>
The use of these hooks are recommended, thus, if the plugin gets deactivated, those hooks will not be called anymore and then you get things consistent and clean.
Do you want to translate it to your language? Just reply to the «Translations» topic in the forum.

Hide Comments Feature

Remove comments functionality and related in your Wordpress instance.

neojp

WordPress 4.9.8 has introduced a new ‘Try Gutenberg’ message on the Dashboard to encourage the installation and testing of the WordPress’ Editor’s new functionality, you can <a href="https://wordpress.org/gutenberg/" rel="ugc">learn more about Gutenberg here</a>.
While this is a great call to action on WordPress end, some users might prefer to not have this message floating around their Dashboards, hence the creation of this simple little plugin.
<blockquote>
WordPress 4.9.8 will contain the “Try Gutenberg” callout, encouraging site owners to install the Gutenberg plugin, to test how their existing content and plugins works with the block editor. It also presents the option of installing the Classic Editor plugin, should they feel that they need more time to prepare for switching over to the block editor. <a href="http://bit.ly/2nbVRv7" rel="nofollow ugc">More information</a>
</blockquote>

Remove 'Try Gutenberg' callout

Starting WordPress 4.9.8 a new 'Try Gutenberg' callout will be displayed, use this to disable such message. http://bit.ly/2nbVRv7

Hide Comments Feature vs Remove 'Try Gutenberg' callout