Remove generated directories with 100s of files.

client/html/generated/html/dartium/ElementTimeControl.dart

Index: client/html/generated/html/dartium/ElementTimeControl.dart
diff --git a/client/html/generated/html/dartium/ElementTimeControl.dart b/client/html/generated/html/dartium/ElementTimeControl.dart
deleted file mode 100644
index 4e5b5dd33af60f6e520e92cd0ce6965257185cd2..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/ElementTimeControl.dart
+++ /dev/null
@@ -1,24 +0,0 @@
-
-class _ElementTimeControlImpl extends _DOMTypeBase implements ElementTimeControl {
-  _ElementTimeControlImpl._wrap(ptr) : super._wrap(ptr);
-
-  void beginElement() {
-    _ptr.beginElement();
-    return;
-  }
-
-  void beginElementAt(num offset) {
-    _ptr.beginElementAt(_unwrap(offset));
-    return;
-  }
-
-  void endElement() {
-    _ptr.endElement();
-    return;
-  }
-
-  void endElementAt(num offset) {
-    _ptr.endElementAt(_unwrap(offset));
-    return;
-  }
-}