Suppress unnamed library analyzer spam in shelldb

sky/sdk/lib/framework/components/fixed_height_scrollable.dart

Index: sky/sdk/lib/framework/components/fixed_height_scrollable.dart
diff --git a/sky/sdk/lib/framework/components/fixed_height_scrollable.dart b/sky/sdk/lib/framework/components/fixed_height_scrollable.dart
index 41c074221221a565588ccb66ab2cb6a560d33374..e54ebafa2a9c4561a215b87ace49c33da2f55e68 100644
--- a/sky/sdk/lib/framework/components/fixed_height_scrollable.dart
+++ b/sky/sdk/lib/framework/components/fixed_height_scrollable.dart
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-library components_fixed_height_scrollable;
-
 import '../animation/scroll_behavior.dart';
 import '../debug/tracing.dart';
 import '../fn.dart';
@@ -104,5 +102,5 @@ abstract class FixedHeightScrollable extends Scrollable {
     );
   }
 
-  List<UINode> buildItems(int start, int count);
+  List<UINode> buildItems(int start, int count);  
 }