Update cst.html

Author: Commandstone

cst.html

@@ -129,7 +129,6 @@ <h1><span class="highlight">CST协会</span></h1>
                     <li><a href="blog/blog.html">博客🗒️｜</a></li>
                     <li><a href="mv/mv.html">视频💻｜</a></li>
                     <li><a href="game/game.html">小游戏🎮｜</a></li>
-                    <li><a href="chat/chat.html">聊天[BUG]｜</a></li>
                     <li class="current"><a href="cpgm/cpgm.html">产品🛍️</a></li>
                 </ul>
             </nav>