Remove generated directories with 100s of files.

client/html/generated/html/frog/SVGLength.dart

Index: client/html/generated/html/frog/SVGLength.dart
diff --git a/client/html/generated/html/frog/SVGLength.dart b/client/html/generated/html/frog/SVGLength.dart
deleted file mode 100644
index 10bec0b4d60159386c188363c7b2d8c37ffa7f43..0000000000000000000000000000000000000000
--- a/client/html/generated/html/frog/SVGLength.dart
+++ /dev/null
@@ -1,37 +0,0 @@
-
-class _SVGLengthImpl implements SVGLength native "*SVGLength" {
-
-  static final int SVG_LENGTHTYPE_CM = 6;
-
-  static final int SVG_LENGTHTYPE_EMS = 3;
-
-  static final int SVG_LENGTHTYPE_EXS = 4;
-
-  static final int SVG_LENGTHTYPE_IN = 8;
-
-  static final int SVG_LENGTHTYPE_MM = 7;
-
-  static final int SVG_LENGTHTYPE_NUMBER = 1;
-
-  static final int SVG_LENGTHTYPE_PC = 10;
-
-  static final int SVG_LENGTHTYPE_PERCENTAGE = 2;
-
-  static final int SVG_LENGTHTYPE_PT = 9;
-
-  static final int SVG_LENGTHTYPE_PX = 5;
-
-  static final int SVG_LENGTHTYPE_UNKNOWN = 0;
-
-  final int unitType;
-
-  num value;
-
-  String valueAsString;
-
-  num valueInSpecifiedUnits;
-
-  void convertToSpecifiedUnits(int unitType) native;
-
-  void newValueSpecifiedUnits(int unitType, num valueInSpecifiedUnits) native;
-}