Remove generated directories with 100s of files.

client/html/generated/html/dartium/ScriptElement.dart

Index: client/html/generated/html/dartium/ScriptElement.dart
diff --git a/client/html/generated/html/dartium/ScriptElement.dart b/client/html/generated/html/dartium/ScriptElement.dart
deleted file mode 100644
index 3855ba35918d6c7a373deb33d101d6e3cfa77226..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/ScriptElement.dart
+++ /dev/null
@@ -1,32 +0,0 @@
-
-class _ScriptElementImpl extends _ElementImpl implements ScriptElement {
-  _ScriptElementImpl._wrap(ptr) : super._wrap(ptr);
-
-  bool get async() => _wrap(_ptr.async);
-
-  void set async(bool value) { _ptr.async = _unwrap(value); }
-
-  String get charset() => _wrap(_ptr.charset);
-
-  void set charset(String value) { _ptr.charset = _unwrap(value); }
-
-  bool get defer() => _wrap(_ptr.defer);
-
-  void set defer(bool value) { _ptr.defer = _unwrap(value); }
-
-  String get event() => _wrap(_ptr.event);
-
-  void set event(String value) { _ptr.event = _unwrap(value); }
-
-  String get htmlFor() => _wrap(_ptr.htmlFor);
-
-  void set htmlFor(String value) { _ptr.htmlFor = _unwrap(value); }
-
-  String get src() => _wrap(_ptr.src);
-
-  void set src(String value) { _ptr.src = _unwrap(value); }
-
-  String get type() => _wrap(_ptr.type);
-
-  void set type(String value) { _ptr.type = _unwrap(value); }
-}