Remove duplicated test (already in numpy_memoryview.pyx).

tests/memoryview/gh2588.pyx

-# mode: run
-
-cimport cython
-@cython.boundscheck(False)
-@cython.wraparound(False)
-def testing_memoryview(double[:, :] x):
-    """ Function testing boundscheck and wraparound in memoryview
-    >>> import numpy as np
-    >>> array = np.ones((2,2)) * 3.5
-    >>> testing_memoryview(array)
-    """
-    cdef Py_ssize_t numrow = x.shape[0]
-    cdef Py_ssize_t i
-    for i in range(numrow):
-        x[i, 0]
-        x[i]
-        x[i, ...]
-        x[i, :]