Remove generated directories with 100s of files.

client/dom/generated/src/interface/SVGTextContentElement.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 SVGTextContentElement extends SVGElement, SVGTests, SVGLangSpace, SVGExternalResourcesRequired, SVGStylable {
-
-  static final int LENGTHADJUST_SPACING = 1;
-
-  static final int LENGTHADJUST_SPACINGANDGLYPHS = 2;
-
-  static final int LENGTHADJUST_UNKNOWN = 0;
-
-  final SVGAnimatedEnumeration lengthAdjust;
-
-  final SVGAnimatedLength textLength;
-
-  int getCharNumAtPosition(SVGPoint point);
-
-  num getComputedTextLength();
-
-  SVGPoint getEndPositionOfChar(int offset);
-
-  SVGRect getExtentOfChar(int offset);
-
-  int getNumberOfChars();
-
-  num getRotationOfChar(int offset);
-
-  SVGPoint getStartPositionOfChar(int offset);
-
-  num getSubStringLength(int offset, int length);
-
-  void selectSubString(int offset, int length);
-}