test_upload_url_concurrency not in test/ directory

[Hawk777]

I’m not certain if this is intentional or accidental, but test_upload_url_concurrency is in the main package source directory rather than the test/ directory, despite being a test.

[vbaltrusaitis-reef]

This file is ancient and it's not a part of the test suite that is run with nox or otherwise in CI, it's more of a "test script" than an actual test. It should be either incorporated into the test suite or perhaps simply removed.

[ppolewicz]

I don't think anyone used it for many years now.

@Hawk777 since this is your finding, would you like to do the honors?

[Hawk777]

You’d like the test deleted?

[ppolewicz]

Yes, and the changelog needs to mention it (please see a note about how to use towncrier)