DEP: Remove np.rank which has been deprecated for more than 5 years

[sameshl]

references #7059
xref #11521
@mattip I am still not sure if removing the function is the best choice. We could go ahead if you agree or we could also remove the warning and deprecated note entirely as you suggested

[charris]

Expired deprecations need a release note.

[mattip]

Since #13908 is taking a while, perhaps just add a note to doc/release/1.18.0-notes.rst and we will refactor that file if/when #13908 lands

[sameshl]

@mattip I am not able to debug why the builds are failing. Can you help me out?

[mattip]

Does python3 runtests.py pass for you?

[sameshl]

@mattip While running python3 runtests.py, I am getting error

     from Cython.Compiler.Version import version as cython_version
     ModuleNotFoundError: No module named 'Cython'

`

[seberg]

@sameshl as the error suggests, you need Cython to build NumPy. Just installing it – through whatever channel you typically use – should work (we do require a fairly recent version, but that should not be an issue).

[sameshl]

@mattip Let me know if any changes are required.

[seberg]

@sameshl, we are trying to change the way we do release notes. Can you move your note about this into a new file named changelog/14039.expired.rst? And yes, that can be a single line.

EDIT: Sorry, you have to rebase on master first, or the changelog folder will not exist.

[sameshl]

Sure, will do that

[kritisingh1]

xref #11521 as well. Sorry I didn't notice. Closing #14113 as duplicate

[seberg]

Somewhat think last time around we just did a bullet point list here. Not sure it matters, I think I will just change it later (and then hope we actually do it like that) ;). Thanks!

[sameshl]

Sure. Thanks!

[sameshl]

@seberg Let me know if any more changes are required.

[seberg]

Rebased/squashed the commits together and made the release notes a bullet point. Merging, thanks.

[sameshl]

Thanks @seberg !