Bug 1307522 - Remove obsolete comment. r=me and DONTBUILD because NPOTB

MozReview-Commit-ID: BA6Ak87vhKQ

layout/base/nsLayoutUtils.cpp

@@ -8491,11 +8491,6 @@ nsLayoutUtils::CalculateScrollableRectForFrame(nsIScrollableFrame* aScrollableFr
   if (aScrollableFrame) {
     contentBounds = aScrollableFrame->GetScrollRange();
 
-    // We ifndef the below code for Fennec because it requires special behaviour
-    // on the APZC side. Because Fennec has it's own PZC implementation which doesn't
-    // provide the special behaviour, this code will cause it to break. We can remove
-    // the ifndef once Fennec switches over to APZ or if we add the special handling
-    // to Fennec
     nsPoint scrollPosition = aScrollableFrame->GetScrollPosition();
     if (aScrollableFrame->GetScrollbarStyles().mVertical == NS_STYLE_OVERFLOW_HIDDEN) {
       contentBounds.y = scrollPosition.y;