remove tool-switcher (#24242)

Author: peterbe

contributing/content-markup-reference.md

@@ -156,8 +156,6 @@ These instructions are pertinent to VS Code users.
 {% endvscode %}
 ```
 
-Unlike [operating system tags](#operating-system-tags), which will automatically add tabs to select the operating system at the top of the article, you must add `{% include tool-switcher %}` wherever you want to display tabs to select the tool. This allows you to display the tabs at the top of the article or immediately before a relevant section.
-
 You can define a default tool in the frontmatter. For more information, see the [content README](../content/README.md#defaulttool).
 
 ## Reusable and variable strings of text

includes/tool-switcher.html

@@ -14,12 +14,10 @@ Intro text
 
 generic text
 
-{% include tool-switcher %}
 {% webui %} dotcom text  {% endwebui %}
 {% cli %} cli text  {% endcli %}
 {% desktop %} desktop text {% enddesktop %}
 
-{% include tool-switcher %}
 {% webui %} dotcom text 2 {% endwebui %}
 {% cli %} cli text 2 {% endcli %}
-{% desktop %} desktop text 2 {% enddesktop %}
+{% desktop %} desktop text 2 {% enddesktop %}