fix manylinux1 Failed to publish artifacts

paddle/fluid/inference/api/demo_ci/clean.sh

+set -x
+cd `dirname $0`
+rm -rf build/ data/
+set +x

paddle/scripts/paddle_build.sh

@@ -547,6 +547,7 @@ function test_fluid_inference_lib() {
 EOF
         cd ${PADDLE_ROOT}/paddle/fluid/inference/api/demo_ci
         ./run.sh ${PADDLE_ROOT} ${WITH_MKL:-ON} ${WITH_GPU:-OFF}
+        ./clean.sh
       fi
 }