Removed polymer & mirror from Observatory

runtime/observatory/lib/src/elements/script_inset.dart

Index: runtime/observatory/lib/src/elements/script_inset.dart
diff --git a/runtime/observatory/lib/src/elements/script_inset.dart b/runtime/observatory/lib/src/elements/script_inset.dart
index 7413051488dc215ff90f91ed704124f2bdabdcb4..0162ab55d005637dca9f13425bcde0694c8507dd 100644
--- a/runtime/observatory/lib/src/elements/script_inset.dart
+++ b/runtime/observatory/lib/src/elements/script_inset.dart
@@ -16,7 +16,7 @@ import 'package:observatory/src/elements/helpers/uris.dart';
 import 'package:observatory/utils.dart';
 
 class ScriptInsetElement extends HtmlElement implements Renderable {
-  static const tag = const Tag<ScriptInsetElement>('script-inset-wrapped');
+  static const tag = const Tag<ScriptInsetElement>('script-inset');
 
   RenderingScheduler _r;
 
@@ -775,7 +775,6 @@ class ScriptInsetElement extends HtmlElement implements Renderable {
       }
     }
 
-    line.changes.listen((_) => update());
     e.onClick.listen((event) {
       if (busy) {
         return;