Revert "Fix QUrl::topLevelDomain(QUrl::FullyDecoded)"

This reverts commit e3fa266623b08e837cb4ccc7fe59da243d03dd27

That commit applied a change at the wrong place in the code.

Change-Id: I21e3045a3af14ad2f90c5fe338815c35a2d27ae6
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: David Faure (KDE) <faure@kde.org>