fix(docs): Drop announcement bar

docs/overrides/main.html

@@ -179,34 +179,3 @@
     <title>{{ config.site_name }}</title>
   {% endif %}
 {% endblock %}
-
-{% block announce %}
-  <style>
-    .md-banner {
-      background-color: rgba(53, 151, 147, 0.1);
-      color: rgb(53, 151, 147);
-      width: 100%;
-      padding: 10px 0;
-      margin: 0;
-    }
-    .md-banner__inner {
-      margin: 0 auto;
-      padding: 0 0.8rem;
-      text-align: center;
-    }
-    .md-banner__inner p {
-      margin: 0;
-    }
-    .md-banner__inner a {
-      color: inherit;
-      text-decoration: underline;
-    }
-    .md-banner__inner a:hover {
-      color: inherit;
-      cursor: pointer;
-    }
-  </style>
-  <div class="md-banner__inner">
-    <p>Share your thoughts on AI agents. <a target="_blank" href="https://langchain.typeform.com/state-of-agents">Take the 3-min survey</a>.</p>
-  </div>
-{% endblock %}