DataFusion repo got 40MB larger

[alamb]

Describe the bug

We accidentally have checked in a 40MB binary docs.tgz file in https://github.com/apache/datafusion/pull/10407

https://github.com/apache/datafusion/pull/10416 removed the file but it is still in git history

Thus the DataFusion repo is significantly larger than it used to be

To Reproduce

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Expected behavior

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Additional context

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