Remove Token from FCM

Hi, I have a problem with push notifications using FIREBASE CLOUD MESSAGING, specifically the unsubscribe Token after pressing a button and thus stop receiving notifications. So my question is: How can I unsubscribe a service token or device? I've been trying to use:

FirebaseInstanceId.getInstance().deleteInstanceId();
FirebaseInstanceId.getInstance().deleteInstanceId(); 
FirebaseInstanceId.getInstance()
      .deleteToken(FirebaseInstanceId.getInstance().getToken(),null);

but no method worked for me

I leave the code of my classes:

MainActivity:

public class MainActivity extends AppCompatActivity {

private Button sa;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    sa = (Button) findViewById(R.id.sa);

    FirebaseMessaging.getInstance().subscribeToTopic("test");
    FirebaseInstanceId.getInstance().getToken();

    sa.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            FirebaseMessaging.getInstance().unsubscribeFromTopic("test");


            try {
                //FirebaseInstanceId.getInstance().deleteInstanceId();
                FirebaseInstanceId.getInstance().deleteInstanceId();
               // FirebaseInstanceId.getInstance().deleteToken(FirebaseInstanceId.getInstance().getToken(),null);
            } catch (IOException e) {
                e.printStackTrace();
            }
            Toast.makeText(getApplicationContext(),"Borrado",Toast.LENGTH_SHORT).show();
        }
    });
}
}

FirebaseInstanceIDService

public class FirebaseInstanceIDService extends FirebaseInstanceIdService {

@Override
public void onTokenRefresh() {
    String token= FirebaseInstanceId.getInstance().getToken();

    registerToken(token);


}

private void registerToken(String token) {

   OkHttpClient client = new OkHttpClient();
    RequestBody body = new FormBody.Builder()
            .add("Token", token)
            .build();

    Request request = new Request.Builder()
            .url("http://192.168.0.107:8080/android/notificacion/registro.php")
            .post(body)
            .build();
    try {
        client.newCall(request).execute();
    } catch (IOException e) {
        e.printStackTrace();
    }

}

 }

FirebaseMessagingService

public class FirebaseMessagingService extends com.google.firebase.messaging.FirebaseMessagingService {
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    showNotification(remoteMessage.getData().get("message"));
}

private void showNotification(String message) {
    Intent i = new Intent(this,MainActivity.class);
    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    PendingIntent pendingIntent = PendingIntent.getActivity(this,0,i,PendingIntent.FLAG_UPDATE_CURRENT);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
            .setAutoCancel(true)
            .setContentTitle("Nueva Notificación")
            .setContentText(message)
            .setSmallIcon(R.drawable.default_img)
            .setContentIntent(pendingIntent);

    NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    manager.notify(0,builder.build());
}
}

I hope and you can help me, Thanks!