old_contents: PHONES = {
      "diego": {"ip": "192.168.1.220", "status": None},
      "carla": {"ip": "192.168.1.157", "status": None}
  }
  
  ST_IP = "192.168.1.152"
  
new_contents: PHONES = {
      "diego": {"ip": "{IP}", "status": None},
      "carla": {"ip": "{IP}", "status": None}
  }
  
  ST_IP = "{IP}"
  
subject: remove conf file