simplify test

tests/test_schema.py

@@ -1,5 +1,3 @@
-import os
-import tempfile
 
 import pytest
 
@@ -12,11 +10,5 @@ def metadata_json():
 
 def test_model_metadata_json_operations(metadata_json):
     from stac_model.schema import MLModel
-    with tempfile.TemporaryDirectory() as temp_dir:
-        temp_filepath = os.path.join(temp_dir, "tempfile.json")
-        with open(temp_filepath, "w") as file:
-            file.write(metadata_json)
-        with open(temp_filepath) as json_file:
-            json_str = json_file.read()
-            model_metadata = MLModel.model_validate_json(json_str)
+    model_metadata = MLModel.model_validate_json(metadata_json)
     assert model_metadata.name == "Resnet-18 Sentinel-2 ALL MOCO"