Remove hello.sh

hello.sh

-SCRIPT_PATH="`dirname \"$0\"`"              # relative
-# python ${SCRIPT_PATH}/hello.py              # run command
-DIRNAME=$(date +"%Y-%m-%d_hello")           # output dir
-DATASET_NAME="output-$DIRNAME"
-mkdir -p ${DATASET_NAME}
-echo -n "HELLO SEKAI" > ${DATASET_NAME}/one.txt
-dataset_json_file=${DATASET_NAME}/${DATASET_NAME}.dataset.json
-echo "{\"version\": \"v1.0\"}" > $dataset_json_file
-metadata_json_file=${DATASET_NAME}/${DATASET_NAME}.met.json
-echo "{}" > $metadata_json_file