Remove generated directories with 100s of files.

client/html/generated/html/dartium/TableColElement.dart

Index: client/html/generated/html/dartium/TableColElement.dart
diff --git a/client/html/generated/html/dartium/TableColElement.dart b/client/html/generated/html/dartium/TableColElement.dart
deleted file mode 100644
index 4746e750f60bf3d2ae58d71944ad2e9d6d875191..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/TableColElement.dart
+++ /dev/null
@@ -1,28 +0,0 @@
-
-class _TableColElementImpl extends _ElementImpl implements TableColElement {
-  _TableColElementImpl._wrap(ptr) : super._wrap(ptr);
-
-  String get align() => _wrap(_ptr.align);
-
-  void set align(String value) { _ptr.align = _unwrap(value); }
-
-  String get ch() => _wrap(_ptr.ch);
-
-  void set ch(String value) { _ptr.ch = _unwrap(value); }
-
-  String get chOff() => _wrap(_ptr.chOff);
-
-  void set chOff(String value) { _ptr.chOff = _unwrap(value); }
-
-  int get span() => _wrap(_ptr.span);
-
-  void set span(int value) { _ptr.span = _unwrap(value); }
-
-  String get vAlign() => _wrap(_ptr.vAlign);
-
-  void set vAlign(String value) { _ptr.vAlign = _unwrap(value); }
-
-  String get width() => _wrap(_ptr.width);
-
-  void set width(String value) { _ptr.width = _unwrap(value); }
-}