Remove generated directories with 100s of files.

client/dom/generated/src/interface/SVGMatrix.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-// WARNING: Do not edit - generated code.
-
-interface SVGMatrix {
-
-  num a;
-
-  num b;
-
-  num c;
-
-  num d;
-
-  num e;
-
-  num f;
-
-  SVGMatrix flipX();
-
-  SVGMatrix flipY();
-
-  SVGMatrix inverse();
-
-  SVGMatrix multiply(SVGMatrix secondMatrix);
-
-  SVGMatrix rotate(num angle);
-
-  SVGMatrix rotateFromVector(num x, num y);
-
-  SVGMatrix scale(num scaleFactor);
-
-  SVGMatrix scaleNonUniform(num scaleFactorX, num scaleFactorY);
-
-  SVGMatrix skewX(num angle);
-
-  SVGMatrix skewY(num angle);
-
-  SVGMatrix translate(num x, num y);
-}