removed wheel_dir variable from ci scripts #99

Job	Run time
checks / check-style	1m 29s
checks / other-checks	31s
conda-python-build / compute-matrix	4s
wheel-build / compute-matrix	2s
wheel-build / 12.8.0, 3.12, arm64, rockylinux8	5m 48s
conda-python-build / 12.8.0, 3.12, amd64, rockylinux8	3m 9s
conda-python-tests / compute-matrix	2s
conda-python-tests / 12.8.0, 3.12, amd64, ubuntu24.04, h100, latest-driver, latest-deps	1m 48s
wheel-tests / compute-matrix	3s
wheel-tests / 11.8.0, 3.12, arm64, ubuntu20.04, a100, latest-driver, latest-deps	3m 12s
pr-builder / run	1s
	16m 9s

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