Removing external CSS files with hook?

Question

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?

<link type="text/css" rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" media="all" />

Answer 1

You can use the following code to remove your external css

function hook_css_alter(&$css) {
  // Remove defaults.css file.
  unset($css['path of you external css']);
}

Answer 2

Yes, hook_css_alter can be used with external CSS.

Answer 3

Use function hook_css_alter you can unset css

function hook_css_alter(&$css) {
  // Remove defaults.css file.
  unset($css[drupal_get_path('module', 'system') . '/defaults.css']);
}

Answer 4

You can use function hook_css_alter. This hook function will alter CSS files before they are output on the page.

//This hook function will unset css.
function hook_css_alter(&$css) {
    // Remove defaults.css file.
    unset($css['CSS FILE PATH']);
}

In additionally, you want to remove core css then follow below code:

function hook_css_alter(&$css) {
    $exclude = array(
        'misc/vertical-tabs.css' => FALSE
    );
    $css = array_diff_key($css, $exclude);
}

just add $exclude to your info to remove a CSS file. This is simple way to remove css file.

Let me know if there is any doubt/query from this.