Remove navigation elements on embedded help builds (like htmlhelp)

docs/sphinx_rtd_theme_chm_friendly/layout.html

@@ -110,6 +110,7 @@
   {%- block extrabody %} {% endblock %}
   <div class="wy-grid-for-nav">
     {#- SIDE NAV, TOGGLES ON MOBILE #}
+    {%- if not embedded %}
     <nav data-toggle="wy-nav-shift" class="wy-nav-side">
       <div class="wy-side-scroll">
         <div class="wy-side-nav-search" {% if theme_style_nav_header_background %} style="background: {{theme_style_nav_header_background}}" {% endif %}>
@@ -159,17 +160,20 @@
         {%- endblock %}
       </div>
     </nav>
+    {%- endif %}
 
     <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
 
       {#- MOBILE NAV, TRIGGLES SIDE NAV ON TOGGLE #}
       {#- Translators: This is an ARIA section label for the navigation menu that is visible when viewing the page on mobile devices -#}
+      {% if not embedded %}
       <nav class="wy-nav-top" aria-label="{{ _('Mobile navigation menu') }}" {% if theme_style_nav_header_background %} style="background: {{theme_style_nav_header_background}}" {% endif %}>
         {%- block mobile_nav %}
           <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
           <a href="{{ pathto(master_doc) }}">{{ project }}</a>
         {%- endblock %}
       </nav>
+      {% endif %}
 
       <div class="wy-nav-content">
       {%- block content %}
@@ -178,7 +182,10 @@
         {%- else %}
         <div class="rst-content">
         {%- endif %}
+          {# Don't show breadcrumbs on embedded #}
+          {% if not embedded %}
           {% include "breadcrumbs.html" %}
+          {% endif %}
           <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
           {%- block document %}
            <div itemprop="articleBody">