code: public static void removeCookie (@Nonnull final HttpServletResponse aHttpResponse, @Nonnull final Cookie aCookie)
    {
      ValueEnforcer.notNull (aHttpResponse, "HttpResponse");
      ValueEnforcer.notNull (aCookie, "aCookie");
  
      // expire the cookie!
      aCookie.setMaxAge (0);
      aHttpResponse.addCookie (aCookie);
    }
docs: Remove a cookie by setting the max age to 0.
  
  @param aHttpResponse
  The HTTP response. May not be <code>null</code>.
  @param aCookie
  The cookie to be removed. May not be <code>null</code>.