The DELETE /batch/objects endpoint specifies a tenant query param that can be used when you want to perform a delete for class that has multi tenancy enabled, but that parameter is missing from the corresponding function in the client:

def delete_objects(
    self,
    class_name: str,
    where: dict,
    output: str = "minimal",
    dry_run: bool = False,
) -> dict:

The tenant parameter should be added as an optional parameter here.