fix(bias-audit): remove invalid org_id kwarg in create call

create_bias_audit() does not accept an org_id kwarg — the tenant scope
is organization_id, not the label-style org_id from the frontend config.
The spurious kwarg has been present since the initial bias audit commit
and caused every POST /bias-audits/run to fail with a 500.

Author: gorkem-bwl

EvalServer/src/controllers/bias_audits.py

@@ -115,7 +115,6 @@ async def create_bias_audit_controller(
                 organization_id=organization_id,
                 db=db,
                 audit_id=audit_id,
-                org_id=effective_org_id,
                 project_id=config_data.get("projectId"),
                 preset_id=preset_id,
                 preset_name=preset_name,