🔥 chore(test_database.py): remove unused test_stress_create_flow function

The test_stress_create_flow function is not used in the codebase and is therefore removed to improve code readability and maintainability.

tests/test_database.py

@@ -1,6 +1,5 @@
 import json
 import pytest
-import threading
 
 from uuid import UUID, uuid4
 from sqlalchemy.orm import Session
@@ -278,25 +277,6 @@ def test_read_empty_flows(client: TestClient):
     assert len(response.json()) == 0
 
 
-def test_stress_create_flow(client: TestClient, json_flow: str):
-    flow_data = json.loads(json_flow)
-    data = flow_data["data"]
-    flow = FlowCreate(name="Test Flow", description="description", data=data)
-
-    def create_flow():
-        response = client.post("api/v1/flows/", json=flow.dict())
-        assert response.status_code == 200
-
-    threads = []
-    for _ in range(100):
-        t = threading.Thread(target=create_flow)
-        threads.append(t)
-        t.start()
-
-    for t in threads:
-        t.join()
-
-
 def test_create_flow_style(client: TestClient):
     flow_style = FlowStyleCreate(color="red", emoji="🔴")
     response = client.post("api/v1/flow_styles/", json=flow_style.dict())