Deletes items from all bins with any of the specified tags.
Many sites have more than one active cache backend, and each backend may use a different strategy for storing tags against cache items, and deleting cache items associated with a given tag.
When deleting a given list of tags, we iterate over each cache backend, and and call deleteTags() on each.
array $tags: The list of tags to delete cache items for.
public static function deleteTags(array $tags) {
foreach (static::getBins() as $cache_backend) {
$cache_backend
->deleteTags($tags);
}
}