By default letter_box is disabled

AlexeyAB

2018-06-04 efaf684cb20b996db0cd6d99d20fabb4bc26859a

 src/captcha.c

@@ -28,7 +28,6 @@

void train_captcha(char *cfgfile, char *weightfile)
{
    data_seed = time(0);
    srand(time(0));
    float avg_loss = -1;
    char *base = basecfg(cfgfile);