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

sky/engine/core/css/parser/CSSPropertyParser.cpp

Index: sky/engine/core/css/parser/CSSPropertyParser.cpp
diff --git a/sky/engine/core/css/parser/CSSPropertyParser.cpp b/sky/engine/core/css/parser/CSSPropertyParser.cpp
index 438960ff5678b1d831f57902855881817659b02f..c98e7b42e4b0ac9148d6f5c3f8ce057e02b51c70 100644
--- a/sky/engine/core/css/parser/CSSPropertyParser.cpp
+++ b/sky/engine/core/css/parser/CSSPropertyParser.cpp
@@ -702,13 +702,6 @@ bool CSSPropertyParser::parseValue(CSSPropertyID propId)
             validPrimitive = (!id && validUnit(value, FLength | FPercent));
         break;
 
-    case CSSPropertyWidows: // <integer> | inherit | auto (Ditto)
-        if (id == CSSValueAuto)
-            validPrimitive = true;
-        else
-            validPrimitive = (!id && validUnit(value, FPositiveInteger));
-        break;
-
     case CSSPropertyZIndex: // auto | <integer> | inherit
         if (id == CSSValueAuto)
             validPrimitive = true;