Remove CURSOR_VISIBILITY, it's always off

Source/core/css/CSSComputedStyleDeclaration.cpp

Index: Source/core/css/CSSComputedStyleDeclaration.cpp
diff --git a/Source/core/css/CSSComputedStyleDeclaration.cpp b/Source/core/css/CSSComputedStyleDeclaration.cpp
index ad745c6b829dfc139ef288ac01975d95c9aa48aa..3fbd395ee8a7f9e450c1ca6ea67d86980fc8eb6d 100644
--- a/Source/core/css/CSSComputedStyleDeclaration.cpp
+++ b/Source/core/css/CSSComputedStyleDeclaration.cpp
@@ -254,9 +254,6 @@ static const CSSPropertyID staticComputableProperties[] = {
     CSSPropertyWebkitColumnRuleWidth,
     CSSPropertyWebkitColumnSpan,
     CSSPropertyWebkitColumnWidth,
-#if ENABLE(CURSOR_VISIBILITY)
-    CSSPropertyWebkitCursorVisibility,
-#endif
     CSSPropertyWebkitFilter,
     CSSPropertyWebkitAlignContent,
     CSSPropertyWebkitAlignItems,
@@ -1834,10 +1831,6 @@ PassRefPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValue(CSSPropert
             }
             return value.release();
         }
-#if ENABLE(CURSOR_VISIBILITY)
-        case CSSPropertyWebkitCursorVisibility:
-            return cssValuePool().createValue(style->cursorVisibility());
-#endif
         case CSSPropertyDirection:
             return cssValuePool().createValue(style->direction());
         case CSSPropertyDisplay: