Remove SVGElementInstanceList

Source/core/svg/SVGElementInstance.cpp

Index: Source/core/svg/SVGElementInstance.cpp
diff --git a/Source/core/svg/SVGElementInstance.cpp b/Source/core/svg/SVGElementInstance.cpp
index c735d82990ff5a27384d8646b803cb27d2d93bac..d4aad6a48e582a5c65cdf1a4d27a23a9bc238ee1 100644
--- a/Source/core/svg/SVGElementInstance.cpp
+++ b/Source/core/svg/SVGElementInstance.cpp
@@ -27,7 +27,6 @@
 #include "core/events/Event.h"
 #include "core/events/EventListener.h"
 #include "core/svg/SVGElement.h"
-#include "core/svg/SVGElementInstanceList.h"
 #include "core/svg/SVGUseElement.h"
 
 #include "wtf/RefCountedLeakCounter.h"
@@ -153,11 +152,6 @@ void SVGElementInstance::detach()
     removeDetachedChildrenInContainer<SVGElementInstance, SVGElementInstance>(*this);
 }
 
-PassRefPtr<SVGElementInstanceList> SVGElementInstance::childNodes()
-{
-    return SVGElementInstanceList::create(this);
-}
-
 void SVGElementInstance::setShadowTreeElement(SVGElement* element)
 {
     ASSERT(element);