diff --git a/tests/test_get_model_definitions_formfeed_escape.py b/tests/test_get_model_definitions_formfeed_escape.py
index 3e34b392a..ca8a48e8e 100644
--- a/tests/test_get_model_definitions_formfeed_escape.py
+++ b/tests/test_get_model_definitions_formfeed_escape.py
@@ -1,16 +1,7 @@
-from collections.abc import Iterator
-from typing import Any
-
-import fastapi._compat
-import fastapi.openapi.utils
-import pydantic.schema
-import pytest
 from fastapi import FastAPI
 from pydantic import BaseModel
 from starlette.testclient import TestClient
 
-from .utils import needs_pydanticv1
-
 
 class Address(BaseModel):
     """
@@ -137,21 +128,3 @@ def test_openapi_schema():
     response = client.get("/openapi.json")
     assert response.status_code == 200, response.text
     assert response.json() == openapi_schema
-
-
-class SortedTypeSet(set):
-    """
-    Set of Types whose `__iter__()` method yields results sorted by the type names
-    """
-
-    def __init__(self, seq: set[type[Any]], *, sort_reversed: bool):
-        super().__init__(seq)
-        self.sort_reversed = sort_reversed
-
-    def __iter__(self) -> Iterator[type[Any]]:
-        members_sorted = sorted(
-            super().__iter__(),
-            key=lambda type_: type_.__name__,
-            reverse=self.sort_reversed,
-        )
-        yield from members_sorted