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 2229e30023b603739ab8ab7f13ae202ff20c92fc..a3642e2921c00051babb7c275c9fc60b9edb1917 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,
@@ -1828,10 +1825,6 @@ 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: