prevent selftest freeze

sa_core.c

@@ -1703,14 +1703,14 @@ int validate_flatness(int i) {
     if (actual_t[j] < peakLevel - 6)    // Search right -3dB
       break;
   }
-  shell_printf("\n\rRight width %d\n\r", j - peakIndex );
+  //shell_printf("\n\rRight width %d\n\r", j - peakIndex );
   if (j - peakIndex < test_case[i].width)
     return(TS_FAIL);
   for (j = peakIndex; j > 0; j--) {
     if (actual_t[j] < peakLevel - 6)    // Search left -3dB
       break;
   }
-  shell_printf("Left width %d\n\r", j - peakIndex );
+  //shell_printf("Left width %d\n\r", j - peakIndex );
   if (peakIndex - j < test_case[i].width)
     return(TS_FAIL);
   test_fail_cause[i] = "";