RemoveNaNColumns - compute nans in advance #2495

Job	Run time
lint	51s
Released (ubuntu-20.04, py3.8)	16m 52s
Released (ubuntu-20.04, py3.9)	16m 42s
Released (ubuntu-20.04, py3.10)	18m 58s
Released (ubuntu-20.04, py3.11)	18m 25s
Latest (ubuntu-20.04, py3.10)	25m 29s
Oldest dependencies (ubuntu-20.04, py3.8)	25m 33s
PyQt6 (ubuntu-20.04, py3.9)	9m 38s
Released (macos-latest, py3.8)	30m 12s
Released (macos-latest, py3.9)	25m 37s
Released (macos-latest, py3.10)	30m 14s
Released (macos-latest, py3.11)	22m 30s
Released (windows-latest, py3.8)	27m 13s
Released (windows-latest, py3.9)	23m 22s
Released (windows-latest, py3.10)	30m 7s
Released (windows-latest, py3.11)	30m 9s
Latest (windows-latest, py3.10)	30m 4s
Latest (macos-latest, py3.10)	27m 19s
PyQt6 (windows-latest, py3.10)	7m 43s
PyQt6 (macos-latest, py3.9)	17m 51s
	7h 14m 49s

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