I don't think they want to touch any real world gods with a 10 foot pole at this point.
If you look at the Cleric playtest packet, the flavor has removed any reference to a particular deity whatsoever.
Cleric doesn't need it, but particular Pantheons are intimately tied to particular Planes in the lore in major setting defining ways, Greco-Roman Gods to Aborea most specifically the layer of Olympus , Norse Gods in Ysgard. Heck you also have the Grey wastes of Hades and Elysium as Planes. You have the Satanic "Pantheon" in Hell. You have the Gnostic Archon "Pantheon" in Mount Celestia (Tome Archons). You literally have Hell, Limbo, Heaven, & Gehanna as Planes from Abrihamic religions as well.
How do you see them removing these from Planescape?
Other Pantheons that are less tied to a particular planes major lore might get diverted to Divine Domains in the Astral Sea.