Deprecate old Cubic EoS #7123

Job	Run time
Compatibility tests	4m 41s
Check code formatting (Black)	34s
Check Spelling	6s
pytest (py3.9/linux)	20m 24s
Pylint	4m 14s
pytest (py3.9/win64)	31m 25s
Build Sphinx docs	5m 34s
pytest (py3.10/linux)	14m 33s
pytest (py3.10/win64)	34m 6s
pytest (py3.11/linux)	19m 26s
pytest (py3.11/win64)	38m 20s
pytest (py3.12/linux)	12m 44s
pytest (py3.12/win64)	29m 32s
Upload coverage report (Codecov) (linux)	10s
Upload coverage report (Codecov) (win64)	14s
	3h 36m 3s

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