Unable to delete a question from FAQ module Drupal 8

I am trying to add delete / remove functionality in FAQ module field name (field_faq). but i cant do that can some one guide me how can i add such functionality in drupal 8. can some one provide the code which i can add in my file

temporary i added in core module (multiple_fields_remove_button.module) this code

function hook_multiple_field_remove_button_field_alter(array &$includedFields) {
  $includedFields = ['field_faq'];
}

but nothing happens kindly guide me how can i add delete functionality for that filed please