Hide regtest tab when not on localhost

index.html

@@ -475,6 +475,13 @@ footer a{color:var(--accent);text-decoration:none}
   </footer>
 
 <script>
+if (window.location.hostname !== 'localhost') {
+  const regtestBtn = document.querySelector('#chainSeg [data-c="regtest"]');
+  if (regtestBtn) {
+    regtestBtn.style.display = 'none';
+    regtestBtn.setAttribute('aria-pressed', 'false');
+  }
+}
 let allServers = [];
 let withTor = true, q = "";
 let minAmount = 50000;