Remove the Dromaeo and TodoMVC samples.

samples/third_party/todomvc_performance/web/elements/td_input.dart

Index: samples/third_party/todomvc_performance/web/elements/td_input.dart
diff --git a/samples/third_party/todomvc_performance/web/elements/td_input.dart b/samples/third_party/todomvc_performance/web/elements/td_input.dart
deleted file mode 100644
index fc3211f36691ff70d7f6e5e04fb1d3d07b26c2b1..0000000000000000000000000000000000000000
--- a/samples/third_party/todomvc_performance/web/elements/td_input.dart
+++ /dev/null
@@ -1,27 +0,0 @@
-library todomvc.web.elements.td_input;
-
-import 'dart:html';
-import 'package:polymer/polymer.dart';
-
-@CustomTag('td-input')
-class TodoInput extends InputElement with Polymer, Observable {
-  factory TodoInput() => new Element.tag('input', 'td-input');
-  TodoInput.created() : super.created() {
-    polymerCreated();
-  }
-
-  keypressAction(e) {
-    // Listen for enter on keypress but esc on keyup, because
-    // IE doesn't fire keyup for enter.
-    if (e.keyCode == KeyCode.ENTER) {
-      e.preventDefault();
-      fire('td-input-commit');
-    }
-  }
-
-  keyupAction(e) {
-    if (e.keyCode == KeyCode.ESC) {
-      fire('td-input-cancel');
-    }
-  }
-}