refactor: remove redundant hostname heading from server tab

The server name is already shown in the navbar — no need to
repeat it as a heading on the page.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

js/pages/serverInfo.js

@@ -8,7 +8,6 @@ function ServerInfoPage(params, container) {
   var html =
     '<div id="ServerInfoController">' +
       '<div class="row">' +
-        '<div class="col-sm-12"><h2 id="si-hostname">Server Info</h2></div>' +
         '<div id="si-fields" class="col-sm-12 row"><span class="text-white-50">Loading…</span></div>' +
       '</div>' +
       '<div class="row">' +
@@ -130,10 +129,6 @@ function ServerInfoPage(params, container) {
       }
     }
     fieldsEl.innerHTML = fieldsHtml;
-    if (data.Hostname) {
-      var hn = document.getElementById('si-hostname');
-      if (hn) hn.textContent = data.Hostname;
-    }
 
     // Collect chart data
     recordedData.push({ ts: Date.now(), data: data });