refactor: remove orphaned mock_decorator and unused imports

Author: MrButtCode

tests/test_upload/test_controllers.py

@@ -1,5 +1,4 @@
 import base64
-from functools import wraps
 from importlib import reload
 from io import BytesIO
 from unittest import mock
@@ -12,19 +11,6 @@
 from tests.base import BaseTestCase, MockResponse
 
 
-def mock_decorator(f):
-    """
-    Passthrough replacement for login_required in unit tests.
-
-    When mock.patch sets side_effect=mock_decorator, Python calls
-    mock_decorator(f) at decoration time and receives this wrapper,
-    which skips all authentication logic and delegates directly to f.
-    """
-    @wraps(f)
-    def decorated_function(*args, **kwargs):
-        return f(*args, **kwargs)
-    return decorated_function
-
 class TestControllers(BaseTestCase):
     """Test upload-related cases."""