Removing Media Gallery Title

Hello -

I've gone to this page - http://docs.rtcamp.com/rtmedia/developers/hooks/rtmedia-hooks/filter-to-change-media-gallery-header-title.html
in order to simply remove the Media Gallery title.

I want to replace it with custom images for each gallery that's going on different pages in my site.

For example, I am going to make a nice big image for the top of this page
http://theawesomeladiesproject.com/gallery/
that will make the Media Gallery title unnecessary.

I tried to add the code below to my child theme's functions.php but it didn't do anything.

function change_media_gallery_title( $title ){
$title = ' ';
return $title;
}
add_filter('rtmedia_gallery_title', 'change_media_gallery_title', 10, 1);

Is this still the code I should be using? Is there an easier way to just not have Media Gallery output at all?

Thanks so much in advance.