Check models used for common tests are small (#24824)

* First models

* Conditional DETR

* Treat DETR models, skip others

* Skip LayoutLMv2 as well

* Fix last tests

tests/models/cvt/test_modeling_cvt.py

@@ -247,6 +247,10 @@ class CvtModelTest(ModelTesterMixin, PipelineTesterMixin, unittest.TestCase):
         config_and_inputs = self.model_tester.prepare_config_and_inputs()
         self.model_tester.create_and_check_for_image_classification(*config_and_inputs)
 
+    @unittest.skip("Will be fixed soon by reducing the size of the model used for common tests.")
+    def test_model_is_small(self):
+        pass
+
     @slow
     def test_model_from_pretrained(self):
         for model_name in CVT_PRETRAINED_MODEL_ARCHIVE_LIST[:1]: