Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_WebGLCompressedTextureS3TCWrappingImplementation.dart

Index: client/dom/generated/src/wrapping/_WebGLCompressedTextureS3TCWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_WebGLCompressedTextureS3TCWrappingImplementation.dart b/client/dom/generated/src/wrapping/_WebGLCompressedTextureS3TCWrappingImplementation.dart
deleted file mode 100644
index 49728cf5d2b19ae9dfc340858a7531cd02af298a..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_WebGLCompressedTextureS3TCWrappingImplementation.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 _WebGLCompressedTextureS3TCWrappingImplementation extends DOMWrapperBase implements WebGLCompressedTextureS3TC {
-  _WebGLCompressedTextureS3TCWrappingImplementation() : super() {}
-
-  static create__WebGLCompressedTextureS3TCWrappingImplementation() native {
-    return new _WebGLCompressedTextureS3TCWrappingImplementation();
-  }
-
-  String get typeName() { return "WebGLCompressedTextureS3TC"; }
-}