remove memoryinstrumentation

Source/core/css/FontFeatureValue.cpp

Index: Source/core/css/FontFeatureValue.cpp
diff --git a/Source/core/css/FontFeatureValue.cpp b/Source/core/css/FontFeatureValue.cpp
index 954f24073ddca3656be8ec1c5764b36c64549f39..9603d70f3a185d64515119005b30419833038375 100644
--- a/Source/core/css/FontFeatureValue.cpp
+++ b/Source/core/css/FontFeatureValue.cpp
@@ -28,7 +28,6 @@
 
 #include "CSSParser.h"
 #include "CSSValueKeywords.h"
-#include "WebCoreMemoryInstrumentation.h"
 #include <wtf/text/StringBuilder.h>
 
 namespace WebCore {
@@ -55,10 +54,4 @@ bool FontFeatureValue::equals(const FontFeatureValue& other) const
     return m_tag == other.m_tag && m_value == other.m_value;
 }
 
-void FontFeatureValue::reportDescendantMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
-{
-    MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
-    info.addMember(m_tag, "tag");
-}
-
 }