Remove generated directories with 100s of files.

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

Index: client/dom/generated/src/wrapping/_WebGLUniformLocationWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_WebGLUniformLocationWrappingImplementation.dart b/client/dom/generated/src/wrapping/_WebGLUniformLocationWrappingImplementation.dart
deleted file mode 100644
index 6b649dff4c3443b6221c47c2751faa299128be53..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_WebGLUniformLocationWrappingImplementation.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 _WebGLUniformLocationWrappingImplementation extends DOMWrapperBase implements WebGLUniformLocation {
-  _WebGLUniformLocationWrappingImplementation() : super() {}
-
-  static create__WebGLUniformLocationWrappingImplementation() native {
-    return new _WebGLUniformLocationWrappingImplementation();
-  }
-
-  String get typeName() { return "WebGLUniformLocation"; }
-}