code: func (h *HTTPBin) DeleteCookies(w http.ResponseWriter, r *http.Request) {
  	params := r.URL.Query()
  	for k := range params {
  		http.SetCookie(w, &http.Cookie{
  			Name:     k,
  			Value:    params.Get(k),
  			HttpOnly: true,
  			MaxAge:   -1,
  			Expires:  time.Now().Add(-1 * 24 * 365 * time.Hour),
  		})
  	}
  	w.Header().Set("Location", "/cookies")
  	w.WriteHeader(http.StatusFound)
  }
docs: // DeleteCookies deletes cookies specified in query params and redirects to
  // Cookies endpoint