Fix QArrayData check

The support for QArrayData variadic arguments without C++11 for GCC
has been removed in commit 69478da0f0d . Change the autotest to reflect
that, too.

Change-Id: I40468f5d67cb2db553fd7a7d5b604f46403ac538
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>