Remove the meta generator tag from WordPress page head and RSS feeds

remove-wordpress-generator-page-rss-head-functions.php

<?php
/* Add this to your child theme's functions.php to remove the generator meta tag from both
 * your web sites page head and from your RSS feeds (ex: /feed/)
 */

// Remove generator meta tag from page head
remove_action( 'wp_head', 'wp_generator' );

// Remove generator tag from RSS feeds
add_filter( 'the_generator', '__return_null' );