WordPress at a glance
function is not described

wp_clean_plugins_cache() WP 3.7.0

Clears the Plugins cache used by get_plugins() and by default, the Plugin Update cache.

No Hooks.

Return

Nothing (null).

Usage

wp_clean_plugins_cache( $clear_update_cache );
$clear_update_cache(true/false)
Whether to clear the Plugin updates cache
Default: true

Code of wp clean plugins cache: wp-admin/includes/plugin.php VER 5.0.3

<?php
function wp_clean_plugins_cache( $clear_update_cache = true ) {
	if ( $clear_update_cache )
		delete_site_transient( 'update_plugins' );
	wp_cache_delete( 'plugins', 'plugins' );
}