remove redundant index.html code

_layouts/index.html

@@ -1,29 +1,3 @@
 ---
 layout: default
 ---
-<link rel="alternate"
-      type="application/rss+xml"
-      title="{{ locale[site.title] }} - {{ page.locale.name }}"
-      href="{{ page.locale.id | append: '/rss20.xml' | absolute_url }}">
-<link rel="alternate"
-      type="application/atom+xml"
-      title="{{ locale[site.title] }} - {{ page.locale.name }}"
-      href="{{ page.locale.id | append: '/atom.xml' | absolute_url }}">
-<script>
-    const header_links = document.querySelectorAll('.nav-link');
-    // Replace rss and atom links with the local versions
-    header_links[1].href = "{{ page.locale.id | append: '/atom.xml' | absolute_url }}";
-    header_links[2].href = "{{ page.locale.id | append: '/rss20.xml' | absolute_url }}";
-</script>
-{% if paginator.page == 1 %}
-{% include main-info.html %}
-{% else %}
-{% include breadcrumbs.html %}
-{% endif %}
-<div class="container my-4 p-0">
-    {% for post in paginator.posts %}
-    {% include calendar.html %}
-    {% include single-post.html %}
-    {% endfor %}
-    {% include pagination.html %}
-</div>