message: Remove range_builder
diff: @@ -105,8 +105,7 @@ class ConfusionMatrixTest(test.TestCase):
  d, l, cm_out = sess.run([data, lab, cm], {m_neg: 0.0, m_pos: 1.0, s: 1.0})
  truth = np.zeros([2, 2], dtype=np_dtype)
  - range_builder = xrange
  - for i in range_builder(len(d)):
  + for i in xrange(len(d)):
  truth[l[i], d[i]] += 1
  self.assertEqual(cm_out.dtype, np_dtype)
  