def posts_delete(url)
      params = prepare_posts_params({ :url => url }, [:url])
      response = request(API_PATH_POSTS_DELETE, params)
      parse_and_eval_execution_response(response.body)
    end
def posts_delete(url)
      params = prepare_posts_params({ :url => url }, [:url])
      response = request(API_PATH_POSTS_DELETE, params)
      parse_and_eval_execution_response(response.body)
    end
Deletes the post matching given +url+ from del.icio.us.
 +url+ can be either an URI instance or a string representation of a valid URL.

 This method doesn't care whether a post with given +url+ exists.
 If not, the execution will silently return without rising any error.

   # delete a post from URI
   d.post_delete(URI.parse('http://www.foobar.com/'))

   # delete a post from a string
   d.post_delete('http://www.foobar.com/')