test(question_gen): drop tests for removed calibrate pairing validator

tests/unit/test_generate_questions.py

@@ -27,7 +27,6 @@ from tools.generate_questions import (
     _rebuild_embedding_pool,
     _save_progress,
     _select_exemplars,
-    _validate_calibrate_args,
 )
 
 # ---------------------------------------------------------------------------
@@ -379,24 +378,6 @@ class TestCalibrateJudgment:
 class TestCalibrateIntegration:
     """calibrate 辅助函数集成测试。"""
 
-    def test_baseline_params_must_be_paired(self) -> None:
-        """baseline 参数必须成对出现。"""
-        with pytest.raises(ValueError, match="成对"):
-            _validate_calibrate_args(baseline_db="some.db", baseline_run_id=None)
-
-    def test_baseline_params_both_none_ok(self) -> None:
-        """两个参数都为 None 不报错。"""
-        _validate_calibrate_args(baseline_db=None, baseline_run_id=None)
-
-    def test_baseline_params_both_provided_ok(self) -> None:
-        """两个参数都提供不报错。"""
-        _validate_calibrate_args(baseline_db="some.db", baseline_run_id="run-001")
-
-    def test_baseline_run_id_only_raises(self) -> None:
-        """只提供 run_id 也报错。"""
-        with pytest.raises(ValueError, match="成对"):
-            _validate_calibrate_args(baseline_db=None, baseline_run_id="run-001")
-
     def test_has_fail_returns_exit_code_1(self) -> None:
         """存在 FAIL 时返回退出码 1。"""
         verdicts = {"Object Recognition": "PASS", "Action Reasoning": "FAIL"}