remove 'widows' property because paged media support is gone so this does nothing now

sky/engine/core/css/StylePropertySet.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 271 matching lines @@
 static const CSSPropertyID staticBlockProperties[] = {
     CSSPropertyOverflow, // This can be also be applied to replaced elements
     CSSPropertyWebkitAspectRatio,
     CSSPropertyPageBreakAfter,
     CSSPropertyPageBreakBefore,
     CSSPropertyPageBreakInside,
     CSSPropertyTextAlign,
     CSSPropertyTextAlignLast,
     CSSPropertyTextIndent,
     CSSPropertyTextJustify,
-    CSSPropertyWidows
 };
 
 static const Vector<CSSPropertyID>& blockProperties()
 {
     DEFINE_STATIC_LOCAL(Vector<CSSPropertyID>, properties, ());
     if (properties.isEmpty())
         CSSPropertyMetadata::filterEnabledCSSPropertiesIntoVector(staticBlockProperties, WTF_ARRAY_LENGTH(staticBlockProperties), properties);
     return properties;
 }
 
@@ skipping 171 matching lines @@
     StringBuilder result;
     result.append(cssName());
     result.appendLiteral(": ");
     result.append(propertyValue()->cssText());
     result.append(';');
     return result.toString();
 }
 
 
 } // namespace blink