Improve type annotations · mhostetter/galois@d3aaf2a

src/galois/_codes/_bch.py:6:25: F401 `typing.Type` imported but unused

src/galois/_codes/_bm_decoder.py:37:31: UP006 Use `type` instead of `Type` for type annotation

src/galois/_codes/_bm_decoder.py:37:66: UP006 Use `type` instead of `Type` for type annotation

src/galois/_codes/_reed_solomon.py:6:25: F401 `typing.Type` imported but unused

src/galois/_domains/_function.py:8:45: F401 `typing.Hashable` imported but unused

src/galois/_domains/_function.py:8:55: F401 `typing.Type` imported but unused

src/galois/_domains/_linalg.py:7:35: F401 `typing.Type` imported but unused

src/galois/_fields/_factory.py:8:25: F401 `typing.Type` imported but unused

src/galois/_fields/_meta.py:6:35: F401 `typing.Type` imported but unused

src/galois/_polymorphic.py:8:17: F401 `numpy` imported but unused

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