Removing external CSS files with hook? My theme is adding the following CSS below. How can I remove it? I know that with Drupal 6 you can do stylesheets[all][] = in the .info file but what about Drupal 7? Can hook_css_alter() be used on an external file?

&lt;link type="text/css" rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" media="all" /&gt;
Yes, hook_css_alter can be used with external CSS.