Remove panels from the dashboard

How can I remove panels from the WordPress Dashboard?

To remove all panels, add this code to your functions.php file

/**
*    Remove all panels from dashboard
**/
add_action('wp_dashboard_setup', 'wpster_remove_dashboard_widgets' );
function wpster_remove_dashboard_widgets() {
	global $wp_meta_boxes;
	unset($wp_meta_boxes['dashboard']);
}

To choose which panel you want to remove, adapt this code and add it to your functions.php file

/**
*    Remove panels from dashboard
**/
add_action('wp_dashboard_setup', 'wpster_disable_default_dashboard_widgets', 999);
function wpster_disable_default_dashboard_widgets() {
	global $wp_meta_boxes;
	unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_activity']);
	unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_right_now']);
	unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_comments']);
	unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_incoming_links']);
	unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']);
	unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']);
	unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']);
	unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_quick_press']);
	unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_recent_drafts']);
	unset($wp_meta_boxes['dashboard']['normal']['core']['bbp-dashboard-right-now']); // bbpress
	unset($wp_meta_boxes['dashboard']['normal']['core']['yoast_db_widget']); // yoast seo
	unset($wp_meta_boxes['dashboard']['normal']['core']['rg_forms_dashboard']); // gravity forms
}