Remove legacy Views code in features_include_defaults()

I think we have some legacy views code still left in features_include_defaults(). After a quick look, here are some code that I think can be stripped down:

  // Build an array of components that require inclusion:
  // Views, CTools components and those using FEATURES_DEFAULTS_INCLUDED.
  if (!isset($include_components) || $reset) {
    $include_components = features_get_components();
    foreach ($include_components as $component => $info) {
      if ($component !== 'views' && !isset($info['api']) && (!isset($info['default_file']) || $info['default_file'] !== FEATURES_DEFAULTS_INCLUDED)) {
        unset($include_components[$component]);
      }
    }
  }

And

  // Inclusion of defaults for Views.
  if ($component === 'views') {
    views_include('view');
    views_include_handlers();
    views_module_include('views_default.inc');
  }

I will try to find some time testing this more, and come up with a patch.