🔥 Remove Jina QA Bot as it has been discontinued

docs/overrides/main.html

@@ -1,29 +1 @@
 {% extends "base.html" %}
-{%- block scripts %}
-{{ super() }}
-<script src="https://cdn.jsdelivr.net/npm/qabot@0.4"></script>
-<script>
-  // This prevents the global search from interfering with qa-bot's internal text input.
-  document.addEventListener('DOMContentLoaded', () => {
-    document.querySelectorAll('qa-bot').forEach((x) => {
-      x.addEventListener('keydown', (event) => {
-        event.stopPropagation();
-      });
-    });
-  });
-</script>
-<qa-bot
-    server="https://tiangolo-typer.docsqa.jina.ai"
-    theme="infer"
-    title="Typer Bot"
-    description="Typer, build great CLIs. Easy to code. Based on Python type hints."
-    style="font-size: 0.8rem"
->
-    <dl>
-        <dt>You can ask questions about Typer. Try:</dt>
-        <dd>How can I terminate a program?</dd>
-        <dd>How to launch applications?</dd>
-        <dd>How to add help to CLI argument?</dd>
-    </dl>
-</qa-bot>
-{%- endblock %}