I created custom post type using Toolset. I want to delete current post author ( front-end user ) when i delete the post.

I tried below code :

    add_action('before_delete_post', 'my_deleted_post');
    function my_deleted_post($post_id){
    	global $post; 
    	if ($post->post_type == "agency") {
    		//echo $post->post_author;exit;
    		require_once(ABSPATH.'wp-admin/includes/user.php' );
       		wp_delete_user( intval($post->post_author) );
       	}
    }

But it is not working to me can anyone help me here ?