Remove generated directories with 100s of files.

client/html/generated/html/dartium/SVGLength.dart

Index: client/html/generated/html/dartium/SVGLength.dart
diff --git a/client/html/generated/html/dartium/SVGLength.dart b/client/html/generated/html/dartium/SVGLength.dart
deleted file mode 100644
index 98aa0c2c5f362e93726bfb11616fc4859d7720f5..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/SVGLength.dart
+++ /dev/null
@@ -1,28 +0,0 @@
-
-class _SVGLengthImpl extends _DOMTypeBase implements SVGLength {
-  _SVGLengthImpl._wrap(ptr) : super._wrap(ptr);
-
-  int get unitType() => _wrap(_ptr.unitType);
-
-  num get value() => _wrap(_ptr.value);
-
-  void set value(num value) { _ptr.value = _unwrap(value); }
-
-  String get valueAsString() => _wrap(_ptr.valueAsString);
-
-  void set valueAsString(String value) { _ptr.valueAsString = _unwrap(value); }
-
-  num get valueInSpecifiedUnits() => _wrap(_ptr.valueInSpecifiedUnits);
-
-  void set valueInSpecifiedUnits(num value) { _ptr.valueInSpecifiedUnits = _unwrap(value); }
-
-  void convertToSpecifiedUnits(int unitType) {
-    _ptr.convertToSpecifiedUnits(_unwrap(unitType));
-    return;
-  }
-
-  void newValueSpecifiedUnits(int unitType, num valueInSpecifiedUnits) {
-    _ptr.newValueSpecifiedUnits(_unwrap(unitType), _unwrap(valueInSpecifiedUnits));
-    return;
-  }
-}