Update wav_frontend.py

hnluo

2023-05-31 51e80c166731cf0b06f56fb9a4cb8d07699ef208

 egs/aishell/transformer/utils/prepare_checkpoint.py

@@ -1,8 +1,6 @@
import os
import shutil

from modelscope.pipelines import pipeline
from modelscope.utils.constant import Tasks
from modelscope.hub.snapshot_download import snapshot_download