Revert "Adding back handleLArCustom() to GeoShapeAction."
This reverts commit 4dc6f24a
These changes were introduced to quickly fix the Athena master build, but I didn't notice that @akraszna and @boudreau already changed Athena code to comply with the new changes. My bad.
Details: atlas/athena!31618 (merged)
Thus, I'm reverting the changes.
Edited by Riccardo Maria Bianchi