Revert "Fix step values for susceptibility slider (#76)" #200

Job	Run time
Ex1 (3.8, ubuntu-latest, tests/test_dcip.py)	36m 31s
Ex1 (3.8, ubuntu-latest, tests/test_em.py)	2h 21m 48s
Ex1 (3.8, ubuntu-latest, tests/test_gpr.py tests/test_seismic.py)	4h 5m 43s
Ex1 (3.8, ubuntu-latest, tests/test_inversion.py)	1h 10m 31s
Ex1 (3.8, ubuntu-latest, tests/test_gravity.py tests/test_mag.py)	1h 10m 36s
Ex1 (3.10, ubuntu-latest, tests/test_dcip.py)	1m 30s
Ex1 (3.10, ubuntu-latest, tests/test_em.py)	1h 11m 57s
Ex1 (3.10, ubuntu-latest, tests/test_gpr.py tests/test_seismic.py)	4h 5m 43s
Ex1 (3.10, ubuntu-latest, tests/test_inversion.py)	32s
Ex1 (3.10, ubuntu-latest, tests/test_gravity.py tests/test_mag.py)	35m 40s
	15h 20m 31s

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