Remove redundant code from classifier.c

src/classifier.c

@@ -136,7 +136,7 @@ void train_classifier(char *datacfg, char *cfgfile, char *weightfile, int *gpus,
     float topk = 0;
 
     int count = 0;
-    double start, end, time_remaining, avg_t_minus_1, avg_t, alpha = 0.01;
+    double start, time_remaining, avg_t_minus_1, avg_t, alpha = 0.01;
     start = what_time_is_it_now();
 
     while(get_current_batch(net) < net.max_batches || net.max_batches == 0){
@@ -189,8 +189,7 @@ void train_classifier(char *datacfg, char *cfgfile, char *weightfile, int *gpus,
 
         printf("%d, %.3f: %f, %f avg, %f rate, %lf seconds, %ld images\n", get_current_batch(net), (float)(*net.seen)/ train_images_num, loss, avg_loss, get_current_rate(net), sec(clock()-time), *net.seen);
 #ifdef OPENCV
-        end = what_time_is_it_now();
-        time_remaining = (net.max_batches - i)*(end - start) / 60 / 60;
+        time_remaining = (net.max_batches - i)*(what_time_is_it_now() - start) / 60 / 60;
         if (i > 1){  // ignore the first iteration
             if (i == 2){
                 avg_t_minus_1 = time_remaining;