Remove generated directories with 100s of files.

client/html/generated/html/interface/IDBKeyRange.dart

Index: client/html/generated/html/interface/IDBKeyRange.dart
diff --git a/client/html/generated/html/interface/IDBKeyRange.dart b/client/html/generated/html/interface/IDBKeyRange.dart
deleted file mode 100644
index 1b280562982c364b533849d243f958ee57e7bf0f..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/IDBKeyRange.dart
+++ /dev/null
@@ -1,24 +0,0 @@
-// 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 IDBKeyRange {
-
-  final IDBKey lower;
-
-  final bool lowerOpen;
-
-  final IDBKey upper;
-
-  final bool upperOpen;
-
-  IDBKeyRange bound(IDBKey lower, IDBKey upper, [bool lowerOpen, bool upperOpen]);
-
-  IDBKeyRange lowerBound(IDBKey bound, [bool open]);
-
-  IDBKeyRange only(IDBKey value);
-
-  IDBKeyRange upperBound(IDBKey bound, [bool open]);
-}