docs: remove posthog tracking script

as tracking scripts are managed via google tag manager they can be removed from code

GitOrigin-RevId: ed86494

docs/_theme/djangodocs/basic/layout.html

@@ -140,11 +140,6 @@ <h3>{{ _('Navigation') }}</h3>
     'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
     })(window,document,'script','dataLayer','GTM-PF5MQ2Z');</script>
     <!-- End Google Tag Manager -->
-    <!-- Posthog -->
-    <script>
-      !function(t,e){var o,n,p,r;e.__SV||(window.posthog=e,e._i=[],e.init=function(i,s,a){function g(t,e){var o=e.split(".");2==o.length&&(t=t[o[0]],e=o[1]),t[e]=function(){t.push([e].concat(Array.prototype.slice.call(arguments,0)))}}(p=t.createElement("script")).type="text/javascript",p.async=!0,p.src=s.api_host+"/static/array.js",(r=t.getElementsByTagName("script")[0]).parentNode.insertBefore(p,r);var u=e;for(void 0!==a?u=e[a]=[]:a="posthog",u.people=u.people||[],u.toString=function(t){var e="posthog";return"posthog"!==a&&(e+="."+a),t||(e+=" (stub)"),e},u.people.toString=function(){return u.toString(1)+".people (stub)"},o="capture identify alias people.set people.set_once set_config register register_once unregister opt_out_capturing has_opted_out_capturing opt_in_capturing reset isFeatureEnabled onFeatureFlags".split(" "),n=0;n<o.length;n++)g(u,o[n]);e._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);
-      posthog.init('a1dops3FFe8KioWsry6W6AVqCG_j-FXmw1LY2d6TrYU', {api_host: 'https://cloud-posthog.hasura-app.io'})
-    </script>
     {%- if use_opensearch %}
     <link rel="search" type="application/opensearchdescription+xml"
           title="{% trans docstitle=docstitle|e %}Search within {{ docstitle }}{% endtrans %}"