Merge pull request #17393 from twbs/v4-dev-xmr-rm-gfonts

Remove the unused Google fonts.

docs/_includes/header.html

@@ -19,10 +19,6 @@
 <!-- Documentation extras -->
 <link href="{{ site.baseurl }}/assets/css/docs.min.css" rel="stylesheet">
 
-<!-- Google Web fonts -->
-<link href="https://fonts.googleapis.com/css?family=Roboto:300,400,400italic,500" rel="stylesheet">
-<link href='https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,300,400italic,600' rel='stylesheet' type='text/css'>
-
 <!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
 <script src="{{ site.baseurl }}/assets/js/ie10-viewport-bug-workaround.js"></script>
 <script src="{{ site.baseurl }}/assets/js/ie-emulation-modes-warning.js"></script>