[tests] further fix Tester object has no attribute '_testMethodName' (#35781)

* bug fix

* update with more cases

* more entries

* Fix

---------

Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>

tests/models/owlvit/test_image_processing_owlvit.py

@@ -26,7 +26,7 @@ if is_vision_available():
     from transformers import OwlViTImageProcessor
 
 
-class OwlViTImageProcessingTester(unittest.TestCase):
+class OwlViTImageProcessingTester:
     def __init__(
         self,
         parent,
@@ -44,7 +44,6 @@ class OwlViTImageProcessingTester(unittest.TestCase):
         image_std=[0.26862954, 0.26130258, 0.27577711],
         do_convert_rgb=True,
     ):
-        super().__init__()
         self.parent = parent
         self.batch_size = batch_size
         self.num_channels = num_channels