Removed Polymer from Observatory deps

packages/web_components/lib/build/web_components.dart

Index: packages/web_components/lib/build/web_components.dart
diff --git a/packages/web_components/lib/build/web_components.dart b/packages/web_components/lib/build/web_components.dart
index 4a71606096176597636eae6c578e1e1d4c44c480..c7b6eb0d15048ff08b37924175487213c5c73576 100644
--- a/packages/web_components/lib/build/web_components.dart
+++ b/packages/web_components/lib/build/web_components.dart
@@ -59,7 +59,6 @@ class WebComponentsTransformer extends Transformer {
     if (options.entryPoints != null) {
       return options.entryPoints.contains(id.path);
     }
-    if (id.path == 'web/index.bootstrap.dart') return true;
     // If no entry point is supplied, then any html file under web/ or test/ is
     // an entry point.
     return (id.path.startsWith('web/') || id.path.startsWith('test/')) &&
@@ -91,6 +90,7 @@ class WebComponentsTransformer extends Transformer {
         transform
             .addOutput(new Asset.fromString(primaryInput.id, doc.outerHtml));
         transform.addOutput(bootstrap);
+        resolver.release();
       });
     });
   }