<link rel="stylesheet" href="<?php bloginfo('stylesheet_url'); ?>" type="text/css" media="screen" />
The "this" that I refer to is the media="screen". If I am not mistaken this is part of the @media rules, but I am not sure if it will be necessary for refactoring this site into a bootstrap mobile responsive site.
Otherwise, I would just eliminate it and place this piece of code:
into the functions.php file. My question being, am I going to mess things up for me down the line when I implement bootstrap templates by eliminating the line of code in the header for the sake of WP best coding practice?