WordPress Disable Password Change Nofitication

There are a few older functions that you would implement via your own custom plugin, but I found that none of them work.

This one didn’t work:
if ( !function_exists( ‘wp_password_change_notification’ ) ) {
function wp_password_change_notification() {}
}

This one didn’t work:
if ( !function_exists(‘wp_new_user_notification’) ) {
function wp_new_user_notification( ) {}
}

This one didn’t work:
add_filter( ‘send_password_change_email’, ‘__return_false’);

What did work:
A free plugin in the WordPress Repository did the trick:
Manage Notification E-mails