fix small bug in prepare.sh

test_tipc/prepare.sh

@@ -252,7 +252,7 @@ elif [[ ${MODE} = "whole_infer" ]]; then
         tar_name=$(func_get_url_file_name "${model_url_value}")
         echo ${tar_name}
         eval "tar -xf ${tar_name}"
-        rm -rf {tar_name}
+        rm -f ${tar_name}
     fi
     if [[ $model_name == "SwinTransformer_large_patch4_window7_224" || $model_name == "SwinTransformer_large_patch4_window12_384" ]]; then
         cmd="mv ${model_name}_22kto1k_pretrained.pdparams ${model_name}_pretrained.pdparams"