Purge unused ModelTester code (#37085)

* Purge correctly this time

* Remove more methods from recent PRs

* make fixup

tests/models/ctrl/test_modeling_ctrl.py

@@ -180,15 +180,6 @@ class CTRLModelTester:
 
         return config, inputs_dict
 
-    def create_and_check_ctrl_for_sequence_classification(self, config, input_ids, head_mask, token_type_ids, *args):
-        config.num_labels = self.num_labels
-        model = CTRLForSequenceClassification(config)
-        model.to(torch_device)
-        model.eval()
-        sequence_labels = ids_tensor([self.batch_size], self.type_sequence_label_size)
-        result = model(input_ids, token_type_ids=token_type_ids, labels=sequence_labels)
-        self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels))
-
 
 @require_torch
 class CTRLModelTest(ModelTesterMixin, GenerationTesterMixin, PipelineTesterMixin, unittest.TestCase):