chore: remove piwik tracking

docs/material_theme_customization/main.html

@@ -1,20 +1,10 @@
 {% extends "base.html" %}
 
 {% block analytics %}
-<script type="text/javascript">
-    (function(window, document, dataLayerName, id) {
-    window[dataLayerName]=window[dataLayerName]||[],window[dataLayerName].push({start:(new Date).getTime(),event:"stg.start"});var scripts=document.getElementsByTagName('script')[0],tags=document.createElement('script');
-    function stgCreateCookie(a,b,c){var d="";if(c){var e=new Date;e.setTime(e.getTime()+24*c*60*60*1e3),d="; expires="+e.toUTCString()}document.cookie=a+"="+b+d+"; path=/"}
-    var isStgDebug=(window.location.href.match("stg_debug")||document.cookie.match("stg_debug"))&&!window.location.href.match("stg_disable_debug");stgCreateCookie("stg_debug",isStgDebug?1:"",isStgDebug?14:-1);
-    var qP=[];dataLayerName!=="dataLayer"&&qP.push("data_layer_name="+dataLayerName),isStgDebug&&qP.push("stg_debug");var qPString=qP.length>0?("?"+qP.join("&")):"";
-    tags.async=!0,tags.src="https://mithrilsecurity.containers.piwik.pro/"+id+".js"+qPString,scripts.parentNode.insertBefore(tags,scripts);
-    !function(a,n,i){a[n]=a[n]||{};for(var c=0;c<i.length;c++)!function(i){a[n][i]=a[n][i]||{},a[n][i].api=a[n][i].api||function(){var a=[].slice.call(arguments,0);"string"==typeof a[0]&&window[dataLayerName].push({event:n+"."+i+":"+a[0],parameters:[].slice.call(arguments,1)})}}(i[c])}(window,"ppms",["tm","cm"]);
-    })(window, document, 'dataLayer', '82244d82-e27f-4f0e-bb2f-c94a190fd5ab');
-  </script>
   <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
     new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
     j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
     'https://www.googletagmanager.com/gtm.js?id=%27+i+dl;f.parentNode.insertBefore(j,f)';
     })(window,document,'script','dataLayer','GTM-TVD93MF');
   </script>
-{% endblock %}
+{% endblock %}