Remove unused masked udf cython/c++ code

[brandon-b-miller]

This PR removes the c++ side of the original masked UDF code introduced in #8213. These kernels had some limitations and are now superseded by the numba-generated versions we moved to in #9174. As far as I can tell, cuDF python was the only thing consuming this API for the short time it has existed. However I am marking this breaking just in case.

[vyasr]

@brandon-b-miller if you're using pre-commit locally you should be able to install and run the cmake-format check locally yourself with the usual pre-commit commands. If you're not, then make sure cmake-format is installed to your local environment and and invoke the cpp/scripts/run-cmake-format.sh script directly.

[davidwendt]

Thanks for doing this Brandon

[brandon-b-miller]

@brandon-b-miller if you're using pre-commit locally you should be able to install and run the cmake-format check locally yourself with the usual pre-commit commands. If you're not, then make sure cmake-format is installed to your local environment and and invoke the cpp/scripts/run-cmake-format.sh script directly.

Thanks @vyasr this worked great!

[codecov]

Codecov Report

Merging #9792 (7866534) into branch-22.02 (967a333) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

❗ Current head 7866534 differs from pull request most recent head a83da5b. Consider uploading reports for the commit a83da5b to get more accurate results

@@               Coverage Diff                @@
##           branch-22.02    #9792      +/-   ##
================================================
- Coverage         10.49%   10.47%   -0.02%     
================================================
  Files               119      119              
  Lines             20305    20341      +36     
================================================
  Hits               2130     2130              
- Misses            18175    18211      +36     

Impacted Files	Coverage Δ
python/cudf/cudf/__init__.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/column/column.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/frame.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/index.py	0.00% <ø> (ø)
python/cudf/cudf/core/indexed_frame.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/multiindex.py	0.00% <0.00%> (ø)
python/cudf/cudf/utils/utils.py	0.00% <0.00%> (ø)

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[brandon-b-miller]

@gpucibot merge