Remove generated directories with 100s of files.

client/html/generated/html/dartium/Screen.dart

Index: client/html/generated/html/dartium/Screen.dart
diff --git a/client/html/generated/html/dartium/Screen.dart b/client/html/generated/html/dartium/Screen.dart
deleted file mode 100644
index d4e0c4048aa6cc3be9aaf4336449d41aedbd6149..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/Screen.dart
+++ /dev/null
@@ -1,20 +0,0 @@
-
-class _ScreenImpl extends _DOMTypeBase implements Screen {
-  _ScreenImpl._wrap(ptr) : super._wrap(ptr);
-
-  int get availHeight() => _wrap(_ptr.availHeight);
-
-  int get availLeft() => _wrap(_ptr.availLeft);
-
-  int get availTop() => _wrap(_ptr.availTop);
-
-  int get availWidth() => _wrap(_ptr.availWidth);
-
-  int get colorDepth() => _wrap(_ptr.colorDepth);
-
-  int get height() => _wrap(_ptr.height);
-
-  int get pixelDepth() => _wrap(_ptr.pixelDepth);
-
-  int get width() => _wrap(_ptr.width);
-}