Tips: How to get rid RSS Feed from Wordpress Dashboard

Do you want to get rid RSS Feed on your Wordpress Dashboard like this following image?

It’s so easy, you only edit one file: wp-admin/index.php. I currently use Wordpress 2.3.3 but it may be applied to any version 2.x

First, open file wp-admin/index.php, then put comment on line
add_action( 'admin_head', 'index_js' );
see the image below:

Upload it and then re-check your Dashboard. Voila! The RSS Feed are gone :D. This is how the process flows:
index_js function contains a jQuery function which is an AJAX (Asynchronous Javascript and XML) to load RSS Feed then inserted into this HTML code:

<div id="devnews"></div>

<div id="planetnews"></div>

add_action function add this code to the admin head. This skrip will fetch the appropriate code when this script is accessed. The result code will be inserted into HTML tag with ID devnews and planetnews.

The drawback is you must edit file wp-admin/index.php whenever you upgrade Wordpress, but I think it’s worth because you only edit one line only ;).

Update:

For you who use Wordpress 2.5 and above, comment this line too from:
<?php wp_dashboard(); ?>

to
<?php //wp_dashboard(); ?>