Revert a series of wrong fixes for crbug.com/361011

Source/core/svg/SVGScriptElement.cpp

Index: Source/core/svg/SVGScriptElement.cpp
diff --git a/Source/core/svg/SVGScriptElement.cpp b/Source/core/svg/SVGScriptElement.cpp
index 681e01c6ba005f7b5e22e1d2cb24888d6a4f03dc..730674ca7cb6479cb15135eba74f5f81e4453651 100644
--- a/Source/core/svg/SVGScriptElement.cpp
+++ b/Source/core/svg/SVGScriptElement.cpp
@@ -114,12 +114,6 @@ void SVGScriptElement::didNotifySubtreeInsertionsToDocument()
     }
 }
 
-void SVGScriptElement::didMoveToNewDocument(Document& oldDocument)
-{
-    SVGElement::didMoveToNewDocument(oldDocument);
-    m_loader->cancel(&oldDocument);
-}
-
 void SVGScriptElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
 {
     SVGElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);