Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_PositionErrorWrappingImplementation.dart

Index: client/dom/generated/src/wrapping/_PositionErrorWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_PositionErrorWrappingImplementation.dart b/client/dom/generated/src/wrapping/_PositionErrorWrappingImplementation.dart
deleted file mode 100644
index 4cd43ee02ac30d9542110dd02b9cb822d7c72bca..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_PositionErrorWrappingImplementation.dart
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright (c) 2011, 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.
-
-class _PositionErrorWrappingImplementation extends DOMWrapperBase implements PositionError {
-  _PositionErrorWrappingImplementation() : super() {}
-
-  static create__PositionErrorWrappingImplementation() native {
-    return new _PositionErrorWrappingImplementation();
-  }
-
-  int get code() { return _get_code(this); }
-  static int _get_code(var _this) native;
-
-  String get message() { return _get_message(this); }
-  static String _get_message(var _this) native;
-
-  String get typeName() { return "PositionError"; }
-}