Revert the functor #16870

Job	Run time
changed-files / Check changed files	16s
checks / other-checks	50s
checks / check-style	1m 47s
devcontainer / build (amd64, 12.5, conda)	10m 28s
devcontainer / build (amd64, 12.5, pip)	8m 36s
static-configure / build	4m 14s
wheel-build-libcudf / compute-matrix	3s
conda-cpp-build / compute-matrix	4s
wheel-build-libcudf / 11.8.0, 3.12, amd64, rockylinux8	8m 59s
wheel-build-libcudf / 12.5.1, 3.12, amd64, rockylinux8	8m 29s
wheel-build-libcudf / 11.8.0, 3.12, arm64, rockylinux8	8m 59s
wheel-build-libcudf / 12.5.1, 3.12, arm64, rockylinux8	8m 31s
conda-cpp-build / 11.8.0, 3.10, amd64, ubuntu22.04	8m 18s
conda-cpp-build / 12.5.1, 3.10, amd64, ubuntu22.04	8m 24s
conda-cpp-build / 11.8.0, 3.10, arm64, ubuntu22.04	8m 29s
conda-cpp-build / 12.5.1, 3.10, arm64, ubuntu22.04	8m 31s
wheel-build-pylibcudf	1s
wheel-build-cudf	1s
wheel-build-cudf-polars	1s
conda-cpp-checks	1s
conda-python-build	1s
conda-cpp-tests	1s
conda-java-tests	1s
wheel-build-dask-cudf	1s
wheel-tests-cudf	1s
pandas-tests	1s
cudf-polars-polars-tests	1s
unit-tests-cudf-pandas	1s
wheel-tests-cudf-polars	1s
conda-notebook-tests	1s
conda-python-cudf-tests	1s
conda-python-other-tests	1s
docs-build	1s
wheel-tests-dask-cudf	1s
pandas-tests-diff	1s
pr-builder / run	1s
	1h 35m 18s

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