Let gutenberg generate the table of contents

Remove the javascript toc code.

blog/templates/page.html

@@ -8,6 +8,25 @@
         {{ page.date | date(format="%b %d, %Y") }}
         {% if page.extra.updated %} (updated on {{ page.extra.updated | date(format="%b %d, %Y") }}) {% endif %}
     </time>
+    <aside id="toc">
+        <h2>Table of Contents</h2>
+        <ol>
+            {% for h2 in page.toc %}
+                <li>
+                    <a href="{{h2.permalink | safe}}">{{ h2.title }}</a>
+                    {% if h2.children %}
+                        <ol>
+                            {% for h3 in h2.children %}
+                                <li>
+                                    <a href="{{h3.permalink | safe}}">{{ h3.title }}</a>
+                                </li>
+                            {% endfor %}
+                        </ol>
+                    {% endif %}
+                </li>
+            {% endfor %}
+            </ol>
+        </aside>
     {{ page.content | safe }}
 {% endblock main %}