Remove plugins from search results in ClassicPress dashboard

functions.php

/**
 * Remove plugins from search results in ClassicPress dashboard.
 * A little ditty by Code Potent. https://codepotent.com
 */

// Add slugs for any individual plugins to remove.
function codepotent_plugins_to_remove() {
	$slugs = [
		'wordfence',
		'jetpack',
	];
	return $slugs;
}

// Add WordPress usernames to remove; removes all their plugins from result.
function codepotent_authors_to_remove() {
	$usernames = [
		'takayukister',
		'joostdevalk',
	];
	return $usernames;
}

// This is where the magic happens.
function codepotent_remove_plugins_from_search($res, $action, $args) {
	if (basename($_SERVER['REQUEST_URI']) === 'plugin-install.php') {
		$plugins = codepotent_plugins_to_remove();
		$authors = codepotent_authors_to_remove();
		foreach ($res->plugins as $n=>$plugin) {
			if (in_array($plugin->slug, $plugins, true)) {
				unset($res->plugins[$n]);
			} else if (in_array(basename($plugin->author_profile), $authors, true)) {
				unset($res->plugins[$n]);
			}
		}
	}
	return $res;
}
add_filter('plugins_api_result', 'codepotent_remove_plugins_from_search', 10, 3);