Remove generated directories with 100s of files.

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

Index: client/dom/generated/src/wrapping/_WebGLRenderbufferWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_WebGLRenderbufferWrappingImplementation.dart b/client/dom/generated/src/wrapping/_WebGLRenderbufferWrappingImplementation.dart
deleted file mode 100644
index 4f93ddbae943729a56810b67bfa1d6bc5b2734af..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_WebGLRenderbufferWrappingImplementation.dart
+++ /dev/null
@@ -1,15 +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 _WebGLRenderbufferWrappingImplementation extends DOMWrapperBase implements WebGLRenderbuffer {
-  _WebGLRenderbufferWrappingImplementation() : super() {}
-
-  static create__WebGLRenderbufferWrappingImplementation() native {
-    return new _WebGLRenderbufferWrappingImplementation();
-  }
-
-  String get typeName() { return "WebGLRenderbuffer"; }
-}