Do you mean it's in your Saved Wi-fi Networks list? Or does it always show up as an available network whenever you turn on wi-fi? If it always shows up whenever you turn on wi-fi at home, it's probably the name of a neighbor's wi-fi network. You can't prevent a nearby network from showing up as available, as far as I know.
ncG1vNJzZmien6fCrr%2BNmqWdqp%2BesaSxza2pmqRemLyue9OhqZ6ZlKh8tbnOm6Clnaeeu6i5wKdlcW5iZoZzew%3D%3D