Remove generated directories with 100s of files.

client/html/generated/html/dartium/DOMTokenList.dart

Index: client/html/generated/html/dartium/DOMTokenList.dart
diff --git a/client/html/generated/html/dartium/DOMTokenList.dart b/client/html/generated/html/dartium/DOMTokenList.dart
deleted file mode 100644
index 89e0c153b4275a7c93243e494d3d0cb94265d1f9..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/DOMTokenList.dart
+++ /dev/null
@@ -1,32 +0,0 @@
-
-class _DOMTokenListImpl extends _DOMTypeBase implements DOMTokenList {
-  _DOMTokenListImpl._wrap(ptr) : super._wrap(ptr);
-
-  int get length() => _wrap(_ptr.length);
-
-  void add(String token) {
-    _ptr.add(_unwrap(token));
-    return;
-  }
-
-  bool contains(String token) {
-    return _wrap(_ptr.contains(_unwrap(token)));
-  }
-
-  String item(int index) {
-    return _wrap(_ptr.item(_unwrap(index)));
-  }
-
-  void remove(String token) {
-    _ptr.remove(_unwrap(token));
-    return;
-  }
-
-  String toString() {
-    return _wrap(_ptr.toString());
-  }
-
-  bool toggle(String token) {
-    return _wrap(_ptr.toggle(_unwrap(token)));
-  }
-}