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, 1 insertions, 2 deletions

diff --git a/coverage/control.py b/coverage/control.py
index 5c5d13aa..3ccf313e 100644
--- a/coverage/control.py
+++ b/coverage/control.py
@@ -14,7 +14,6 @@ import time
 
 from coverage import env
 from coverage.annotate import AnnotateReporter
-from coverage.backward import iitems
 from coverage.collector import Collector, CTracer
 from coverage.config import read_coverage_config
 from coverage.context import should_start_context_test_function, combine_context_switchers
@@ -1063,7 +1062,7 @@ class Coverage(object):
             ('path', sys.path),
             ('environment', sorted(
                 ("%s = %s" % (k, v))
-                for k, v in iitems(os.environ)
+                for k, v in os.environ.items()
                 if any(slug in k for slug in ("COV", "PY"))
             )),
             ('command_line', " ".join(getattr(sys, 'argv', ['-none-']))),