Remove “Plugins” and “Other News” widgets from WordPress dashboard

Simply paste the code below in your functions.php file. Once you saved the changes, the “plugins” and “other news” widgets will not be shown again.

 //Remove unwanted widgets from Dashboard 
function remove_dashboard_widgets() 
{ 	
global $wp_meta_boxes;  	
unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']); 	
unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']); 
} 
add_action('wp_dashboard_setup', 'remove_dashboard_widgets');

Thanks to WP Guru for the code!