[Tests][YOLO] cleanup temp files before running

Author: Weiming Zhao

models/vision/detection/yolo/run_yolo.sh

@@ -1,6 +1,7 @@
 #!/bin/bash -xv
 # RUN: %s
 curr_dir=`dirname $0`
+make -C $curr_dir clean
 make -C $curr_dir
 
 out_dir=${TEST_TEMP_DIR}/yolo
@@ -11,4 +12,4 @@ echo "${res_info}" >> $out_dir/yolo_xnnpack.txt
 # CHECK: Detecting for image, output: out/result.jpg
 # CHECK-NEXT: [person], pos:[158.149, 204.101, 514.119, 337.473] score:0.992785
 # CHECK-NEXT: [backpack], pos:[209.222, 205.724, 308.212, 257.877] score:0.854316
-# CHECK-NEXT: [skis], pos:[437.568, 148.244, 581.4, 347.084] score:0.932281
+# CHECK-NEXT: [skis], pos:[437.568, 148.244, 581.4, 347.084] score:0.932281