Disable CPython-only feature in test runner for PyPy.
Disable CPython-only feature in test runner for PyPy.

cython/cython,da-woods/cython,da-woods/cython,cython/cython,scoder/cython,scoder/cython,da-woods/cython,scoder/cython,scoder/cython,cython/cython,cython/cython,da-woods/cython