Blogs MU: Trying remove the sub intro text under the featured block

I am having a very hard time trying to remove the default text from the featured block in the child theme. I am aware that the file is located in blogs-mu/_inc/functions/options-functions.php.

I have remove the content that was located in the file at line 364. Below is what it now looks like

array(
"name" => __("Your Network sub intro post text", TEMPLATE_DOMAIN),
"description" => __("you can insert post text for the sub intro on homepage", TEMPLATE_DOMAIN),
"id" => $shortname . $shortprefix . "featured_sub_intro_post",
"inblock" => "homepage",
"type" => "textarea",
"std" => "",
),

I have copied the file and folder over to blogs-mu-chid/_inc/functions/options-functions.php. but the content still appears. Any idea what I am missing?

Thanks