Bug 1481601 - Remove now-useless aPreallocateChildren from nsINode::Clone() and friends. r=bzbarsky

Since sed on multiple lines ended up being such a pain and I didn't end up
writing a script for this because I didn't think it'd end up being so boring, I
may have made a couple cleanups here and there as well...

Differential Revision: https://phabricator.services.mozilla.com/D2887

dom/html/HTMLObjectElement.cpp

@@ -526,10 +526,9 @@ HTMLObjectElement::DestroyContent()
 }
 
 nsresult
-HTMLObjectElement::CopyInnerTo(Element* aDest, bool aPreallocateChildren)
+HTMLObjectElement::CopyInnerTo(Element* aDest)
 {
-  nsresult rv = nsGenericHTMLFormElement::CopyInnerTo(aDest,
-                                                      aPreallocateChildren);
+  nsresult rv = nsGenericHTMLFormElement::CopyInnerTo(aDest);
   NS_ENSURE_SUCCESS(rv, rv);
 
   if (aDest->OwnerDoc()->IsStaticDocument()) {