code: public void deleteDiscussionNote(GitlabMergeRequest mergeRequest, int discussionId, int noteId) throws IOException {
          String tailUrl = GitlabProject.URL + "/" + mergeRequest.getProjectId() +
                  GitlabMergeRequest.URL + "/" + mergeRequest.getIid() +
                  GitlabDiscussion.URL + "/" + discussionId +
                  GitlabNote.URL + "/" + noteId;
          retrieve().method(DELETE).to(tailUrl, Void.class);
      }
docs: Delete a discussion note of a merge request.
  
  @param mergeRequest  The merge request of the discussion.
  @param discussionId  The id of the discussion to resolve.
  @param noteId        The id of a discussion note.
  
  @return The deleted note object.
  @throws IOException on a GitLab api call error