ImportError running check-shebang-scripts-are-executable

This commit hook always fails with an import error.
```
Check that scripts with shebangs are executable...............................Failed
- hook id: check-shebang-scripts-are-executable
- exit code: 1
Traceback (most recent call last):
  File "/home/mtepfer/.cache/pre-commit/reponp0slfro/py_env-python3/bin/check-shebang-scripts-are-executable", line 5, in <module>
    from pre_commit_hooks.check_executables_have_shebangs import main_reverse
ImportError: cannot import name 'main_reverse' from 'pre_commit_hooks.check_executables_have_shebangs' (/home/mtepfer/.cache/pre-commit/reponp0slfro/py_env-python3/lib/python3.7/site-packages/pre_commit_hooks/check_executables_have_shebangs.py)

```

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