如何使用Drupal 8（模块）忽略样式表？

Question

我有一个drupal模块，该模块使用不需要的样式表。

这是它的位置：

modules/contrib/private_message/css/private_message_notification_block.css

https://www.drupal.org/project/private_message

如何使用Drupal 8忽略样式表？

更新

这是我的文件bootstrap_barrio_subtheme_front_office.info.yml

这是正确的位置吗？

name: Bootstrap Barrio Subtheme Front Office
type: theme
description: 'Basic structure for a Bootstrap Barrio SubTheme.'
version: VERSION
core: 8.x
base theme: bootstrap_barrio

libraries:
  - bootstrap_barrio_subtheme_front_office/bootstrap
  - bootstrap_barrio_subtheme_front_office/fontawesome
  - bootstrap_barrio_subtheme_front_office/global-styling

libraries-override:
  private_message/notification_block:
    css:
      component:
        css/private_message_notification_block.css: false

regions:
  navigation_collapsible_first: 'Navigation (Collapsible first)'
  navigation_menu_first: 'Navigation (Menu first)'
  navigation_notification_first: 'Navigation (Notification first)'
  navigation_logo: 'Navigation (Logo)'
  navigation_notification_second: 'Navigation (Notification second)'
  navigation_menu_second: 'Navigation (Menu second)'
  navigation_collapsible_second: 'Navigation (Collapsible second)'
  breadcrumb: 'Breadcrumb'
  header: 'Top Bar'
  sidebar_first: 'Primary'
  highlighted: 'Highlighted'
  help: 'Help'
  content: 'Content'
  sidebar_second: 'Secondary'
  footer_top: 'Footer top'
  footer_first: 'Footer first'
  footer_second: 'Footer second'
  footer_third: 'Footer third'
  footer_bottom: 'Footer bottom'