Remove tons of OILPAN.

sky/engine/core/css/CSSLineBoxContainValue.h

Index: sky/engine/core/css/CSSLineBoxContainValue.h
diff --git a/sky/engine/core/css/CSSLineBoxContainValue.h b/sky/engine/core/css/CSSLineBoxContainValue.h
index d27d1a48ee5a5b78b41277159222d2f5db465540..61bbd21621eae894c748a9d24faeb13b6044d048 100644
--- a/sky/engine/core/css/CSSLineBoxContainValue.h
+++ b/sky/engine/core/css/CSSLineBoxContainValue.h
@@ -49,8 +49,6 @@ public:
     bool equals(const CSSLineBoxContainValue& other) const { return m_value == other.m_value; }
     LineBoxContain value() const { return m_value; }
 
-    void traceAfterDispatch(Visitor* visitor) { CSSValue::traceAfterDispatch(visitor); }
-
 private:
     LineBoxContain m_value;