🔥 Remove Python 3.9 specific files, no longer needed after updating translations (#14931)

docs_src/extending_openapi/tutorial001_py39.py

@@ -1,29 +0,0 @@
-from fastapi import FastAPI
-from fastapi.openapi.utils import get_openapi
-
-app = FastAPI()
-
-
-@app.get("/items/")
-async def read_items():
-    return [{"name": "Foo"}]
-
-
-def custom_openapi():
-    if app.openapi_schema:
-        return app.openapi_schema
-    openapi_schema = get_openapi(
-        title="Custom title",
-        version="2.5.0",
-        summary="This is a very custom OpenAPI schema",
-        description="Here's a longer description of the custom **OpenAPI** schema",
-        routes=app.routes,
-    )
-    openapi_schema["info"]["x-logo"] = {
-        "url": "https://fastapi.tiangolo.com/img/logo-margin/logo-teal.png"
-    }
-    app.openapi_schema = openapi_schema
-    return app.openapi_schema
-
-
-app.openapi = custom_openapi