code: public function deletePost($blogName, $postId, $reblogKey)
      {
          $options = array('id' => $postId, 'reblog_key' => $reblogKey);
          $path = $this->blogPath($blogName, '/post/delete');
  
          return $this->postRequest($path, $options, false);
      }
docs: Delete a post
  
  @param string $blogName  the name of the blog the post is on
  @param int    $postId    the id of the post
  @param string $reblogKey the reblog_key of the post
  
  @return array the response array