Remove generated directories with 100s of files.

client/html/generated/html/dartium/SVGNumberList.dart

Index: client/html/generated/html/dartium/SVGNumberList.dart
diff --git a/client/html/generated/html/dartium/SVGNumberList.dart b/client/html/generated/html/dartium/SVGNumberList.dart
deleted file mode 100644
index 37a717b694a5a1754879c2368bffbc82d5ef7f96..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/SVGNumberList.dart
+++ /dev/null
@@ -1,35 +0,0 @@
-
-class _SVGNumberListImpl extends _DOMTypeBase implements SVGNumberList {
-  _SVGNumberListImpl._wrap(ptr) : super._wrap(ptr);
-
-  int get numberOfItems() => _wrap(_ptr.numberOfItems);
-
-  SVGNumber appendItem(SVGNumber item) {
-    return _wrap(_ptr.appendItem(_unwrap(item)));
-  }
-
-  void clear() {
-    _ptr.clear();
-    return;
-  }
-
-  SVGNumber getItem(int index) {
-    return _wrap(_ptr.getItem(_unwrap(index)));
-  }
-
-  SVGNumber initialize(SVGNumber item) {
-    return _wrap(_ptr.initialize(_unwrap(item)));
-  }
-
-  SVGNumber insertItemBefore(SVGNumber item, int index) {
-    return _wrap(_ptr.insertItemBefore(_unwrap(item), _unwrap(index)));
-  }
-
-  SVGNumber removeItem(int index) {
-    return _wrap(_ptr.removeItem(_unwrap(index)));
-  }
-
-  SVGNumber replaceItem(SVGNumber item, int index) {
-    return _wrap(_ptr.replaceItem(_unwrap(item), _unwrap(index)));
-  }
-}