Problematic CSS Script

This thread concerns this guy:

Code (text):

http://fonts.googleapis.com/css?family=Ubuntu:400,700&subset=latin,latin-ext

I am trying to optimize my website www.lukecorden.com and using GTMetrix whenever there is a recommendation that needs fixing, i.e gzip, expires headers, etc I fix it and it's all good with the exception in each instance of this font. I'm not really sure what it is except that I believe it resides in my functions.php and is the main font for the wordpress site.
The…
Problematic CSS Script

See original post by Luke Corden