def _delete_rows(self, pos, num_rows):

        for model in self.data:
            model._delete_rows(pos, num_rows)

        return num_rows
Drive a L{LocalWorkerAMP} instance, iterating the tests and calling
dataset/ETHPy150Open enthought/pyface/pyface/ui/wx/grid/composite_grid_model.py/CompositeGridModel._delete_rows--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/trial/_dist/disttrial.py/DistTrialRunner._driveWorker