Revert "Added page to Observatory to display native memory allocation information."

runtime/observatory/lib/elements.dart

Index: runtime/observatory/lib/elements.dart
diff --git a/runtime/observatory/lib/elements.dart b/runtime/observatory/lib/elements.dart
index 50badc3efc4946c5da2309d186869296e2b46c85..903d5fcb95b89f39154f48c1df89db3cf7840510 100644
--- a/runtime/observatory/lib/elements.dart
+++ b/runtime/observatory/lib/elements.dart
@@ -52,7 +52,6 @@ import 'package:observatory/src/elements/megamorphiccache_view.dart';
 import 'package:observatory/src/elements/metric/details.dart';
 import 'package:observatory/src/elements/metric/graph.dart';
 import 'package:observatory/src/elements/metrics.dart';
-import 'package:observatory/src/elements/native_memory_profiler.dart';
 import 'package:observatory/src/elements/nav/class_menu.dart';
 import 'package:observatory/src/elements/nav/isolate_menu.dart';
 import 'package:observatory/src/elements/nav/library_menu.dart';
@@ -149,7 +148,6 @@ export 'package:observatory/src/elements/megamorphiccache_view.dart';
 export 'package:observatory/src/elements/metric/details.dart';
 export 'package:observatory/src/elements/metric/graph.dart';
 export 'package:observatory/src/elements/metrics.dart';
-export 'package:observatory/src/elements/native_memory_profiler.dart';
 export 'package:observatory/src/elements/nav/class_menu.dart';
 export 'package:observatory/src/elements/nav/isolate_menu.dart';
 export 'package:observatory/src/elements/nav/library_menu.dart';
@@ -250,7 +248,6 @@ Future initElements() async {
   MetricDetailsElement.tag.ensureRegistration();
   MetricGraphElement.tag.ensureRegistration();
   MetricsPageElement.tag.ensureRegistration();
-  NativeMemoryProfileElement.tag.ensureRegistration();
   NavClassMenuElement.tag.ensureRegistration();
   NavIsolateMenuElement.tag.ensureRegistration();
   NavLibraryMenuElement.tag.ensureRegistration();