[chore]: Clean .git tree of lfs cache #327

Describe the bug

clear legacy lfs cache causing .git folder to be some 7gb (local)

Steps to reproduce

import drumscript as ds
ds.transcribe("my_file.wav")

1. Step one
2. Step two
3. See error

Expected behaviour

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Actual behaviour

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Environment

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Audio file details (if relevant)

No response

Additional context

No response