refactor: remove more unneeded backward.py shims

Gone are:

- iitems
- litems
- iternext
- to_bytes
- to_string
- binary_bytes
- byte_to_int
- bytes_to_ints
- BUILTINS

1 files changed, 0 insertions, 24 deletions

diff --git a/tests/test_backward.py b/tests/test_backward.py
deleted file mode 100644
index b40a174b..00000000
--- a/tests/test_backward.py
+++ /dev/null
@@ -1,24 +0,0 @@
-# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
-# For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt
-
-"""Tests that our version shims in backward.py are working."""
-
-from coverage.backward import iitems, binary_bytes, bytes_to_ints
-
-from tests.coveragetest import CoverageTest
-from tests.helpers import assert_count_equal
-
-
-class BackwardTest(CoverageTest):
-    """Tests of things from backward.py."""
-
-    def test_iitems(self):
-        d = {'a': 1, 'b': 2, 'c': 3}
-        items = [('a', 1), ('b', 2), ('c', 3)]
-        assert_count_equal(list(iitems(d)), items)
-
-    def test_binary_bytes(self):
-        byte_values = [0, 255, 17, 23, 42, 57]
-        bb = binary_bytes(byte_values)
-        assert len(bb) == len(byte_values)
-        assert byte_values == list(bytes_to_ints(bb))