Remove PyO3 clippy workaround once 0.17 is release

[tsh56]

Environment

Delta-rs version:
main branch

Binding:
Python

Environment:

• Cloud provider: NA
• OS: linux
• Other: NA

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Bug

What happened: A clippy inner attribute was added to work around a lint error that comes from the PyO3 project in conjunction with the Rust 1.63.0 release.

What you expected to happen: The project should build without lint checks disabled.

How to reproduce it: N/A

More details: The PyO3 ticket is expected to be resolved Tuesday 2022-08-23 with the 0.17 Release.

Fix: The following line should be removed, and the build is expected to succeed.

[tsh56]

Arrow just updated their version of pyo3 to 0.17, and that change is still awaiting release. In the meantime that is preventing cargo update from succeeding. Hopefully that fix will get released soon.