deTABified; removed unused variable provoking a gcc warning

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35143 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/htmlctrl/webkit/webkit.mm

@@ -274,8 +274,6 @@ void wxWebKitCtrl::OnSize(wxSizeEvent &event){
     x = 0;
     y = 0;
 
-	bool isParentTopLevel = true;
-			
     wxWindow* parent = GetParent();
 
     wxWindow* tlw = MacGetTopLevelWindow();