ufunc removal

[nayyirahsan]

Deleted ufunc implementations and tests. Replaced ufunc usage in examples with NumPy. Scalar math in kernels remains. Adjusted init.py and views.py accordingly. Array API CI workflow kept but precompile ufuncs test is commented out.

Addresses issue #361

[IvanGrigorik]

Overall LG
You also need to change some array api tests here
https://github.com/kokkos/pykokkos/pull/367/changes#diff-de4346c5bea6a8c4efd61f7378aac35876f468d8486137fa77b336175f429f8dR60

For example, remove the sqrt function (the function that was removed by this PR)

[IvanGrigorik]

Ok there are some serious problems that I missed on my first review.
If you have any access to Nvidia GPUs - please, try to test your changes on them using Cuda execution space (or run some existing examples/tests)

Unfortunately, we don't have any NVIDIA GitHub runners, and we can't verify the correctness of changes across different systems, so this burden lies on developers. :(

[IvanGrigorik]

Now everything LG, thanks