Remove generated directories with 100s of files.

client/dom/generated/src/interface/DataView.dart

-// Copyright (c) 2012, 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.
-
-interface DataView extends ArrayBufferView {
-
-  num getFloat32(int byteOffset, [bool littleEndian]);
-
-  num getFloat64(int byteOffset, [bool littleEndian]);
-
-  int getInt16(int byteOffset, [bool littleEndian]);
-
-  int getInt32(int byteOffset, [bool littleEndian]);
-
-  Object getInt8();
-
-  int getUint16(int byteOffset, [bool littleEndian]);
-
-  int getUint32(int byteOffset, [bool littleEndian]);
-
-  Object getUint8();
-
-  void setFloat32(int byteOffset, num value, [bool littleEndian]);
-
-  void setFloat64(int byteOffset, num value, [bool littleEndian]);
-
-  void setInt16(int byteOffset, int value, [bool littleEndian]);
-
-  void setInt32(int byteOffset, int value, [bool littleEndian]);
-
-  void setInt8();
-
-  void setUint16(int byteOffset, int value, [bool littleEndian]);
-
-  void setUint32(int byteOffset, int value, [bool littleEndian]);
-
-  void setUint8();
-}