WordPress remove unwanted dashboard items

functions.php

<?php
add_action('wp_dashboard_setup', 'prefix_custom_dashboard_widgets');
/** remove unwanted dashboard items */
function prefix_custom_dashboard_widgets()
{
	global $wp_meta_boxes;

	// QuickPress
	unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_quick_press']);
	
	// Wordpress Development Blog Feed
	unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']);
	
	// Other Wordpress News Feed
	unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']);
	
	// Plugins - Popular, New and Recently updated Wordpress Plugins
	unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']);
}
?>