Activate SimCoreTests(MT) ART jobs for 23.0 branch

Merged John Derek Chapman requested to merge jchapman/athena:SimCoreTests_23.0_main into master

Activate SimCoreTests(MT) ART jobs for 23.0 branch and remove two tests using obsolete NSW geometries.

NB This merge request only updates ART sripts, so will have no effect on the CI output.

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