Remove use_square_size after loading (#30567)

* fix

* add test

---------

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

tests/models/kosmos2/test_processor_kosmos2.py

@@ -17,6 +17,7 @@ import os
 import shutil
 import tempfile
 import unittest
+from tempfile import TemporaryDirectory
 
 import numpy as np
 import pytest
@@ -84,6 +85,15 @@ class Kosmos2ProcessorTest(unittest.TestCase):
 
         return image_inputs
 
+    def test_image_procesor_load_save_reload(self):
+        # make sure load from Hub repo. -> save -> reload locally work
+        image_processor = CLIPImageProcessor.from_pretrained("microsoft/kosmos-2-patch14-224")
+        with TemporaryDirectory() as tmp_dir:
+            image_processor.save_pretrained(tmp_dir)
+            reloaded_image_processor = CLIPImageProcessor.from_pretrained(tmp_dir)
+            assert image_processor.to_dict() == reloaded_image_processor.to_dict()
+            assert image_processor.to_json_string() == reloaded_image_processor.to_json_string()
+
     def test_save_load_pretrained_additional_features(self):
         processor = Kosmos2Processor(tokenizer=self.get_tokenizer(), image_processor=self.get_image_processor())
         processor.save_pretrained(self.tmpdirname)