'Deleting a RVKC should work as with a normal card by using the full
keyword/field-spcifier combination.'

def test_rvkc_delete(self):

    del self._test_header['DP1.AXIS.1']
    assert (len(self._test_header) == 7)
    assert (list(self._test_header)[0] == 'DP1.NAXIS')
    assert (self._test_header[0] == 2)
    assert (list(self._test_header)[1] == 'DP1.AXIS.2')
    del self._test_header['DP1.AXIS.2']
    assert (len(self._test_header) == 6)
    assert (list(self._test_header)[0] == 'DP1.NAXIS')
    assert (self._test_header[0] == 2)
    assert (list(self._test_header)[1] == 'DP1.NAUX')
    assert (self._test_header[1] == 2)
