Revert 157959 "Introduce a new reference graph to SVG*TearOffs."

Source/core/svg/SVGElement.cpp

Index: Source/core/svg/SVGElement.cpp
diff --git a/Source/core/svg/SVGElement.cpp b/Source/core/svg/SVGElement.cpp
index 2bdbe3430e0795297f503dab47b861eacfa2c8de..7ee064323931e0ecd1c45508fbc3bf945acc778e 100644
--- a/Source/core/svg/SVGElement.cpp
+++ b/Source/core/svg/SVGElement.cpp
@@ -79,7 +79,6 @@ SVGElement::SVGElement(const QualifiedName& tagName, Document& document, Constru
 
 SVGElement::~SVGElement()
 {
-    SVGAnimatedProperty::detachAnimatedPropertiesWrappersForElement(this);
     if (!hasSVGRareData())
         ASSERT(!SVGElementRareData::rareDataMap().contains(this));
     else {
@@ -107,7 +106,6 @@ SVGElement::~SVGElement()
     }
     document().accessSVGExtensions()->rebuildAllElementReferencesForTarget(this);
     document().accessSVGExtensions()->removeAllElementReferencesForTarget(this);
-    SVGAnimatedProperty::detachAnimatedPropertiesForElement(this);
 
     ASSERT(inDocument() || !hasRelativeLengths());
 }