comment out obsolete printf's in the larson example

examples/larson.c

@@ -272,7 +272,7 @@ static void runthreads(long sleep_cnt, int min_threads, int max_threads, int chp
         /* used_space = get_allocated_space(&systemallocator.heaps[0]); */
         /* reqd_space = get_used_space(&systemallocator.heaps[0]); */
         //used_space = 0;
-        printf(" Used space: %zu\n Requested space: %zu\n", used_space, reqd_space);
+        /* printf(" Used space: %zu\n Requested space: %zu\n", used_space, reqd_space); */
 
         printf("%2d ", num_threads ) ;
         printf("%6.3f", duration  ) ;