docs: pin version of jekyll-rtd-theme

Sync our customizations under _includes/ with v2.0.9 of
jekyll-rtd-theme. Also, pin the theme version in order to avoid abrupt
build failures in the future (caused by our customization becoming
incompatible with the rolling latest version).

Also, drop jekyll-rtd-theme from the Gemfile. It's useless there as it's
being mandated by remote-theme setting in _config.yml.

docs/Gemfile

@@ -27,5 +27,3 @@ gem "wdm", "~> 0.1.1", :install_if => Gem.win_platform?
 # kramdown v2 ships without the gfm parser by default. If you're using
 # kramdown v1, comment out this line.
 #gem "kramdown-parser-gfm"
-
-gem "jekyll-rtd-theme", "~> 2.0.6"

docs/Gemfile.lock

@@ -137,8 +137,6 @@ GEM
       addressable (~> 2.0)
       jekyll (>= 3.5, < 5.0)
       rubyzip (>= 1.3.0)
-    jekyll-rtd-theme (2.0.7)
-      github-pages (~> 207)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
     jekyll-seo-tag (2.6.1)
@@ -259,7 +257,6 @@ PLATFORMS
 DEPENDENCIES
   github-pages (~> 207)
   jekyll (~> 3.9.0)
-  jekyll-rtd-theme (~> 2.0.6)
   tzinfo (~> 1.2)
   tzinfo-data
   wdm (~> 0.1.1)

docs/_config.yml

@@ -26,7 +26,7 @@ markdown: kramdown
 kramdown:
   toc_levels: 1..3
 
-remote_theme: rundocs/jekyll-rtd-theme
+remote_theme: rundocs/jekyll-rtd-theme@v2.0.9
 
 # Exclude from processing.
 # The following items will not be processed, by default. Create a custom list

docs/_includes/class/addons-wrap.liquid

@@ -36,7 +36,7 @@
         </div>
     </div>
     <div class="addons d-flex flex-column height-full p-2 d-none">
-        {%- assign items = "github, analytics" | split: ", " -%}
+        {%- assign items = "github" | split: ", " -%}
         {% for item in items -%}
             {% include addons/{{ item }}.liquid %}
         {% endfor -%}