When the test was written, we didn't have support for either int128
literals or proper QCOMPARE failure printing (QTest::toString()), so
the code awkwardly constructed literals from 64-bit ones using
arithmetic and QCOMPAREed the high and low 64-bit halves separately.
Now that we have added support for both, simplify the test code
accordingly.
Change-Id: Icdee7bb01f6e4bd3de74233b4fb992b0590ddafd
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
ca38ac7731