Remove generated directories with 100s of files.

client/html/generated/html/dartium/OListElement.dart

Index: client/html/generated/html/dartium/OListElement.dart
diff --git a/client/html/generated/html/dartium/OListElement.dart b/client/html/generated/html/dartium/OListElement.dart
deleted file mode 100644
index 9cd2e03dde574fd896b1070463d109e3c222fd2e..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/OListElement.dart
+++ /dev/null
@@ -1,20 +0,0 @@
-
-class _OListElementImpl extends _ElementImpl implements OListElement {
-  _OListElementImpl._wrap(ptr) : super._wrap(ptr);
-
-  bool get compact() => _wrap(_ptr.compact);
-
-  void set compact(bool value) { _ptr.compact = _unwrap(value); }
-
-  bool get reversed() => _wrap(_ptr.reversed);
-
-  void set reversed(bool value) { _ptr.reversed = _unwrap(value); }
-
-  int get start() => _wrap(_ptr.start);
-
-  void set start(int value) { _ptr.start = _unwrap(value); }
-
-  String get type() => _wrap(_ptr.type);
-
-  void set type(String value) { _ptr.type = _unwrap(value); }
-}