Remove generated directories with 100s of files.

client/html/generated/html/frog/IFrameElement.dart

Index: client/html/generated/html/frog/IFrameElement.dart
diff --git a/client/html/generated/html/frog/IFrameElement.dart b/client/html/generated/html/frog/IFrameElement.dart
deleted file mode 100644
index 56bb8e1ce6b48e376de33587b2dceac13ba75a88..0000000000000000000000000000000000000000
--- a/client/html/generated/html/frog/IFrameElement.dart
+++ /dev/null
@@ -1,33 +0,0 @@
-
-class _IFrameElementImpl extends _ElementImpl implements IFrameElement native "*HTMLIFrameElement" {
-
-  String align;
-
-  _DocumentImpl get contentDocument() => _FixHtmlDocumentReference(_contentDocument);
-
-  _EventTargetImpl get _contentDocument() native "return this.contentDocument;";
-
-  final _WindowImpl contentWindow;
-
-  String frameBorder;
-
-  String height;
-
-  String longDesc;
-
-  String marginHeight;
-
-  String marginWidth;
-
-  String name;
-
-  String sandbox;
-
-  String scrolling;
-
-  String src;
-
-  String width;
-
-  _SVGDocumentImpl getSVGDocument() native;
-}