Remove generated directories with 100s of files.

client/html/generated/html/dartium/SVGRect.dart

Index: client/html/generated/html/dartium/SVGRect.dart
diff --git a/client/html/generated/html/dartium/SVGRect.dart b/client/html/generated/html/dartium/SVGRect.dart
deleted file mode 100644
index 6c1c02d0c88de909d6f46bb9524100807ca471ed..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/SVGRect.dart
+++ /dev/null
@@ -1,20 +0,0 @@
-
-class _SVGRectImpl extends _DOMTypeBase implements SVGRect {
-  _SVGRectImpl._wrap(ptr) : super._wrap(ptr);
-
-  num get height() => _wrap(_ptr.height);
-
-  void set height(num value) { _ptr.height = _unwrap(value); }
-
-  num get width() => _wrap(_ptr.width);
-
-  void set width(num value) { _ptr.width = _unwrap(value); }
-
-  num get x() => _wrap(_ptr.x);
-
-  void set x(num value) { _ptr.x = _unwrap(value); }
-
-  num get y() => _wrap(_ptr.y);
-
-  void set y(num value) { _ptr.y = _unwrap(value); }
-}