Update forward signature test for vision models (#27681)

* Update forward signature

* Empty-Commit

tests/models/upernet/test_modeling_upernet.py

@@ -15,7 +15,6 @@
 """ Testing suite for the PyTorch UperNet framework. """
 
 
-import inspect
 import unittest
 
 from huggingface_hub import hf_hub_download
@@ -170,18 +169,6 @@ class UperNetModelTest(ModelTesterMixin, PipelineTesterMixin, unittest.TestCase)
     def create_and_test_config_common_properties(self):
         return
 
-    def test_forward_signature(self):
-        config, _ = self.model_tester.prepare_config_and_inputs_for_common()
-
-        for model_class in self.all_model_classes:
-            model = model_class(config)
-            signature = inspect.signature(model.forward)
-            # signature.parameters is an OrderedDict => so arg_names order is deterministic
-            arg_names = [*signature.parameters.keys()]
-
-            expected_arg_names = ["pixel_values"]
-            self.assertListEqual(arg_names[:1], expected_arg_names)
-
     def test_for_semantic_segmentation(self):
         config_and_inputs = self.model_tester.prepare_config_and_inputs()
         self.model_tester.create_and_check_for_semantic_segmentation(*config_and_inputs)