All you have to do is simply paste the following code in your theme’s functions.php file. Although it maybe a good idea to save this file as a plugin and make it a drop-in plugin.
function remove_dashboard_widgets() { global $wp_meta_boxes; unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_quick_press']); unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_incoming_links']); unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_right_now']); unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']); unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_drafts']); unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_comments']); unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']); unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']); } add_action('wp_dashboard_setup', 'remove_dashboard_widgets' );