Update hf_demo.py

hf_demo.py

@@ -11,7 +11,6 @@ import hashlib
 import logging
 import sqlite3
 import requests
-import fcntl
 from contextlib import contextmanager
 from datetime import datetime
 from enum import Enum
@@ -37,17 +36,6 @@ from infrastructure import (
     RecommendedAction,
 )
 
-# ============== SINGLE INSTANCE LOCK (per port) ==============
-PORT = int(os.environ.get('PORT', 7860))
-LOCK_FILE = f'/tmp/arf_app_{PORT}.lock'
-try:
-    lock_fd = open(LOCK_FILE, 'w')
-    fcntl.flock(lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
-except (IOError, OSError):
-    print(f"Another instance is already running on port {PORT}. Exiting.")
-    sys.exit(1)
-# ==============================================================
-
 # ============== CONFIGURATION (Pydantic V2) ==============
 class Settings(BaseSettings):
     """Application settings loaded from environment variables."""