Snippets for qt6-qtgraphs 6.11.2 from Fedora ppc64le

Sourced from https://kojipkgs.fedoraproject.org/packages/qt6-qtgraphs/6.11.2/1.fc46/data/logs/ppc64le/build.log.

• /builddir/build/BUILD/qt6-qtgraphs-6.11.2-build/qtgraphs-everywhere-src-6.11.2/examples/graphs/common/aerospacehub/simulator/simulateddatamodel.cpp:82:53: warning: unused parameter ‘parent’ [-Wunused-parameter]
     82 | int SimulatedDataModel::rowCount(const QModelIndex &parent) const
        |                                  ~~~~~~~~~~~~~~~~~~~^~~~~~