Remove generated directories with 100s of files.

client/html/generated/html/frog/CSSMatrix.dart

Index: client/html/generated/html/frog/CSSMatrix.dart
diff --git a/client/html/generated/html/frog/CSSMatrix.dart b/client/html/generated/html/frog/CSSMatrix.dart
deleted file mode 100644
index 6cb121b391de85d589f3ed81805861dcfc9268ad..0000000000000000000000000000000000000000
--- a/client/html/generated/html/frog/CSSMatrix.dart
+++ /dev/null
@@ -1,67 +0,0 @@
-
-class _CSSMatrixImpl implements CSSMatrix native "*WebKitCSSMatrix" {
-
-  num a;
-
-  num b;
-
-  num c;
-
-  num d;
-
-  num e;
-
-  num f;
-
-  num m11;
-
-  num m12;
-
-  num m13;
-
-  num m14;
-
-  num m21;
-
-  num m22;
-
-  num m23;
-
-  num m24;
-
-  num m31;
-
-  num m32;
-
-  num m33;
-
-  num m34;
-
-  num m41;
-
-  num m42;
-
-  num m43;
-
-  num m44;
-
-  _CSSMatrixImpl inverse() native;
-
-  _CSSMatrixImpl multiply(_CSSMatrixImpl secondMatrix) native;
-
-  _CSSMatrixImpl rotate(num rotX, num rotY, num rotZ) native;
-
-  _CSSMatrixImpl rotateAxisAngle(num x, num y, num z, num angle) native;
-
-  _CSSMatrixImpl scale(num scaleX, num scaleY, num scaleZ) native;
-
-  void setMatrixValue(String string) native;
-
-  _CSSMatrixImpl skewX(num angle) native;
-
-  _CSSMatrixImpl skewY(num angle) native;
-
-  String toString() native;
-
-  _CSSMatrixImpl translate(num x, num y, num z) native;
-}