Remove code examples for Python 3.8 in `request_forms`

docs_src/request_forms/tutorial001_an.py

@@ -1,9 +0,0 @@
-from fastapi import FastAPI, Form
-from typing_extensions import Annotated
-
-app = FastAPI()
-
-
-@app.post("/login/")
-async def login(username: Annotated[str, Form()], password: Annotated[str, Form()]):
-    return {"username": username}

tests/test_tutorial/test_request_forms/test_tutorial001.py

@@ -4,15 +4,12 @@ import pytest
 from dirty_equals import IsDict
 from fastapi.testclient import TestClient
 
-from ...utils import needs_py39
-
 
 @pytest.fixture(
     name="client",
     params=[
-        "tutorial001",
+        "tutorial001_py39",
-        "tutorial001_an",
+        "tutorial001_an_py39",
-        pytest.param("tutorial001_an_py39", marks=needs_py39),
     ],
 )
 def get_client(request: pytest.FixtureRequest):