Remove generated directories with 100s of files.

client/html/generated/html/interface/WheelEvent.dart

Index: client/html/generated/html/interface/WheelEvent.dart
diff --git a/client/html/generated/html/interface/WheelEvent.dart b/client/html/generated/html/interface/WheelEvent.dart
deleted file mode 100644
index 9a321c28e3ca3db33d0fe3a4e593ae94df3bb62b..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/WheelEvent.dart
+++ /dev/null
@@ -1,42 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-// WARNING: Do not edit - generated code.
-
-interface WheelEvent extends UIEvent {
-
-  final bool altKey;
-
-  final int clientX;
-
-  final int clientY;
-
-  final bool ctrlKey;
-
-  final bool metaKey;
-
-  final int offsetX;
-
-  final int offsetY;
-
-  final int screenX;
-
-  final int screenY;
-
-  final bool shiftKey;
-
-  final bool webkitDirectionInvertedFromDevice;
-
-  final int wheelDelta;
-
-  final int wheelDeltaX;
-
-  final int wheelDeltaY;
-
-  final int x;
-
-  final int y;
-
-  void initWebKitWheelEvent(int wheelDeltaX, int wheelDeltaY, Window view, int screenX, int screenY, int clientX, int clientY, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
-}