Remove generated directories with 100s of files.

client/html/generated/html/dartium/FontElement.dart

Index: client/html/generated/html/dartium/FontElement.dart
diff --git a/client/html/generated/html/dartium/FontElement.dart b/client/html/generated/html/dartium/FontElement.dart
deleted file mode 100644
index 25e40d6a34aa756eaa9347e9aac6e910b68f112d..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/FontElement.dart
+++ /dev/null
@@ -1,16 +0,0 @@
-
-class _FontElementImpl extends _ElementImpl implements FontElement {
-  _FontElementImpl._wrap(ptr) : super._wrap(ptr);
-
-  String get color() => _wrap(_ptr.color);
-
-  void set color(String value) { _ptr.color = _unwrap(value); }
-
-  String get face() => _wrap(_ptr.face);
-
-  void set face(String value) { _ptr.face = _unwrap(value); }
-
-  String get size() => _wrap(_ptr.size);
-
-  void set size(String value) { _ptr.size = _unwrap(value); }
-}