Revert "Add matomo tracker for javadoc (#15326)"

This reverts commit eb27b14.

Author: dweiss

build-tools/build-infra/src/main/groovy/lucene.documentation.render-javadoc.gradle

@@ -389,34 +389,10 @@ abstract class RenderJavadocTask extends RenderJavadocTaskBase {
     }
 
     LuceneBuildGlobalsExtension buildGlobals = project.rootProject.extensions.getByType(LuceneBuildGlobalsExtension)
-    def copyright = "<i>Copyright &copy; 2000-${buildGlobals.buildYear} Apache Software Foundation. All Rights Reserved.</i>"
-    if (luceneDocUrl.isPresent()) {
-      opts << [
-        '-bottom',
-        """<!-- Matomo -->
-  <script>
-    var _paq = window._paq = window._paq || [];
-    /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
-    _paq.push(["setDoNotTrack", true]);
-    _paq.push(["disableCookies"]);
-    _paq.push(['trackPageView']);
-    _paq.push(['enableLinkTracking']);
-    (function() {
-      var u="https://analytics.apache.org/";
-      _paq.push(['setTrackerUrl', u+'matomo.php']);
-      _paq.push(['setSiteId', '85']);
-      var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
-      g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
-    })();
-  </script>
-  <!-- End Matomo Code -->${copyright}"""
-      ]
-    } else {
-      opts << [
-        '-bottom',
-        copyright
-      ]
-    }
+    opts << [
+      '-bottom',
+      "<i>Copyright &copy; 2000-${buildGlobals.buildYear} Apache Software Foundation. All Rights Reserved.</i>"
+    ]
 
     opts << [
       '-tag',