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

docs_src/using_request_directly/tutorial001_py39.py

@@ -1,9 +0,0 @@
-from fastapi import FastAPI, Request
-
-app = FastAPI()
-
-
-@app.get("/items/{item_id}")
-def read_root(item_id: str, request: Request):
-    client_host = request.client.host
-    return {"client_host": client_host, "item_id": item_id}