✅ Remove unnecessary test

tests/test_compat.py

@@ -9,7 +9,7 @@ from fastapi._compat import (
     is_uploadfile_sequence_annotation,
     v1,
 )
-from fastapi._compat.shared import is_bytes_sequence_annotation, lenient_issubclass
+from fastapi._compat.shared import is_bytes_sequence_annotation
 from fastapi.testclient import TestClient
 from pydantic import BaseModel, ConfigDict
 from pydantic.fields import FieldInfo
@@ -36,11 +36,6 @@ def test_v1_plain_validator_function():
     assert result == {}
 
 
-def test_lenient_is_subclass():
-    # For coverage
-    assert lenient_issubclass(Union[str, int], str) is False
-
-
 def test_is_model_field():
     # For coverage
     from fastapi._compat import _is_model_field