chore: remove product timeline from navbar

apps/site/src/components/navbar/navbar.astro

@@ -17,10 +17,6 @@ const menuitems = [
     title: "关于项目",
     path: "/about",
   },
-  {
-    title: "产品时间轴",
-    path: "/timeline",
-  },
   {
     title: "联系我们",
     path: "/contact",