Remove generated directories with 100s of files.

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

Index: client/dom/generated/src/interface/PerformanceTiming.dart
diff --git a/client/dom/generated/src/interface/PerformanceTiming.dart b/client/dom/generated/src/interface/PerformanceTiming.dart
deleted file mode 100644
index f7f906cb89b644207d82a1fa6483311689e3626c..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/interface/PerformanceTiming.dart
+++ /dev/null
@@ -1,50 +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 PerformanceTiming {
-
-  final int connectEnd;
-
-  final int connectStart;
-
-  final int domComplete;
-
-  final int domContentLoadedEventEnd;
-
-  final int domContentLoadedEventStart;
-
-  final int domInteractive;
-
-  final int domLoading;
-
-  final int domainLookupEnd;
-
-  final int domainLookupStart;
-
-  final int fetchStart;
-
-  final int loadEventEnd;
-
-  final int loadEventStart;
-
-  final int navigationStart;
-
-  final int redirectEnd;
-
-  final int redirectStart;
-
-  final int requestStart;
-
-  final int responseEnd;
-
-  final int responseStart;
-
-  final int secureConnectionStart;
-
-  final int unloadEventEnd;
-
-  final int unloadEventStart;
-}