Updating the samples page to reflect the examples that have been retired.

src/site/samples/solar/example/solar.css

-/* Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file */
-/* for details. All rights reserved. Use of this source code is governed by a */
-/* BSD-style license that can be found in the LICENSE file. */
-
-body {
-  background-color: #F8F8F8;
-  font-family: 'Open Sans', sans-serif;
-  font-size: 14px;
-  font-weight: normal;
-  line-height: 1.2em;
-  margin: 15px;
-}
-
-p {
-  color: #333;
-}
-
-#container {
-  width: 100%;
-  height: 400px;
-  border: 1px solid #ccc;
-  background-color: #fff;
-}
-
-#summary {
-  float: left;
-}
-
-#notes {
-  float: right;
-  width: 120px;
-  text-align: right;
-}
-
-.error {
-  font-style: italic;
-  color: red;
-}