Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_Uint8ClampedArrayWrappingImplementation.dart

-// 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 _Uint8ClampedArrayWrappingImplementation extends _Uint8ArrayWrappingImplementation implements Uint8ClampedArray {
-  _Uint8ClampedArrayWrappingImplementation() : super() {}
-
-  static create__Uint8ClampedArrayWrappingImplementation() native {
-    return new _Uint8ClampedArrayWrappingImplementation();
-  }
-
-  int get length() { return _get_length_Uint8ClampedArray(this); }
-  static int _get_length_Uint8ClampedArray(var _this) native;
-
-  void setElements(Object array, [int offset = null]) {
-    if (offset === null) {
-      _setElements(this, array);
-      return;
-    } else {
-      _setElements_2(this, array, offset);
-      return;
-    }
-  }
-  static void _setElements(receiver, array) native;
-  static void _setElements_2(receiver, array, offset) native;
-
-  Uint8ClampedArray subarray(int start, [int end = null]) {
-    if (end === null) {
-      return _subarray_Uint8ClampedArray(this, start);
-    } else {
-      return _subarray_Uint8ClampedArray_2(this, start, end);
-    }
-  }
-  static Uint8ClampedArray _subarray_Uint8ClampedArray(receiver, start) native;
-  static Uint8ClampedArray _subarray_Uint8ClampedArray_2(receiver, start, end) native;
-
-  String get typeName() { return "Uint8ClampedArray"; }
-}