Remove unnecessary import (#34778)
Summary:
https://github.com/pytorch/pytorch/issues/34563 accidentally introduced a lint error due to an unused import. This PR removes this import.
Jit tests run as expected after this change:
```
> python test/test_jit.py
.....
Ran 2435 tests in 100.077s
OK (skipped=140, expected failures=1)
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/34778
Differential Revision: D20459708
Pulled By: tugrulince
fbshipit-source-id: bb742085fafc849ff3d9507d1557556e01fbeb4b
