Disable annoying Yoast SEO admin notifications

disable-yoast-notification-center.php

<?php

add_action( 'admin_init', function() {
    if ( class_exists( 'Yoast_Notification_Center' ) ) {
        $yoast_nc = Yoast_Notification_Center::get();
        remove_action( 'admin_notices', array( $yoast_nc, 'display_notifications' ) );
        remove_action( 'all_admin_notices', array( $yoast_nc, 'display_notifications' ) );
    }
});

@Shizart Yes, you can add that into your theme's functions.php (no closing tag). Or you can copy/create the entire file (named however you want) into wp-content/mu-plugins folder (create one, if it doesn't exist).

Or, perhaps the best route (since above solution worked up to a certain version of wpseo only), just install and use Hide SEO Bloat which actively keeps playing catch-up with Yoast SEO adding more and more unwanted things.

Since Yoast refuses to cut back on the the upsell spam, here's a snippet to remove all the "You trashed a thing! Buy our premium plugin!" notices that they clutter up the admin dashbaord with. Also recommend looking into the Hide SEO Bloat plugin which basically exists solely to remove all the crap that Yoast adds all over your site. Anyway, put this code in your functions.php (or use something like Code Snippets):

/**
 * Unbind Yoast's awful constant upsell notifications whenever you trash/delete anything
 *
 * @ref: https://github.com/Yoast/wordpress-seo/blob/0742e9b6ba4c0d6ae9d65223267a106b92a6a4a1/admin/watchers/class-slug-change-watcher.php#L18
 * @see: https://wordpress.stackexchange.com/a/352509
 */
function unbind_yoast_slug_change_watchers()
{
  $priority = 10;
  $actions_methods = [
    'wp_trash_post'        => 'detect_post_trash',
    'before_delete_post'   => 'detect_post_delete',
    'delete_term_taxonomy' => 'detect_term_delete',
  ];
  
  global $wp_filter;
  foreach ($actions_methods as $action => $method)
  {
    if (isset($wp_filter[$action]->callbacks[$priority]) and ( ! empty($wp_filter[$action]->callbacks[$priority])))
    {
      $wp_filter[$action]->callbacks[$priority] = array_filter($wp_filter[$action]->callbacks[$priority], function($v, $k) use ($method) {
        return (stripos($k, $method) === false);
      }, ARRAY_FILTER_USE_BOTH );
    }
  }
}
add_action('plugins_loaded', 'unbind_yoast_slug_change_watchers', 20);

Hopefully this makes things a little nicer for anyone using it.

Make sure to code this as follows:

add_action( 'admin_init', "remove_yoast_notifications");
function remove_yoast_notifications() {
    if ( class_exists( 'Yoast_Notification_Center' ) ) {
        $yoast_nc = Yoast_Notification_Center::get();
        remove_action( 'admin_notices', array( $yoast_nc, 'display_notifications' ) );
        remove_action( 'all_admin_notices', array( $yoast_nc, 'display_notifications' ) );
    }
}

As a child theme might want to put them back.