Bug 1279218 - Additional applet tag logic removal; r=bz

I've been having problems with interdiffs on mozreview lately, so for
ease of review, this patch is being submitted as a seperate patch for
review. Once it is r+'d, it will be folded into the first patch in
this set before landing.

MozReview-Commit-ID: CS9MngaXlBd

dom/html/HTMLAllCollection.cpp

@@ -70,7 +70,6 @@ static bool
 IsAllNamedElement(nsIContent* aContent)
 {
   return aContent->IsAnyOfHTMLElements(nsGkAtoms::a,
-                                       nsGkAtoms::applet,
                                        nsGkAtoms::button,
                                        nsGkAtoms::embed,
                                        nsGkAtoms::form,