PYTHON-2504 codec_options is no longer shadowed

Author: ShaneHarvey

.github/workflows/test-python.yml

@@ -63,8 +63,6 @@ jobs:
       - name: Run mypy
         run: |
           mypy --install-types --non-interactive bson gridfs tools pymongo
-          # Test overshadowed codec_options.py file
-          mypy --install-types --non-interactive bson/codec_options.py
           mypy --install-types --non-interactive --disable-error-code var-annotated --disable-error-code attr-defined --disable-error-code union-attr --disable-error-code assignment --disable-error-code no-redef --disable-error-code index --allow-redefinition --allow-untyped-globals --exclude "test/mypy_fails/*.*" test
           python -m pip install -U typing_extensions
           mypy --install-types --non-interactive test/test_typing.py test/test_typing_strict.py