update proc for oov in hotword onnx inference

shixian.shi

2023-09-12 9c622feb645ee8ab166cd6d5fc9d0b2130a0f5fd

 funasr/runtime/python/websocket/README.md

@@ -43,9 +43,6 @@

Install the requirements for client
```shell
apt-get install -y ffmpeg #ubuntu
# yum install -y ffmpeg # centos

git clone https://github.com/alibaba/FunASR.git && cd FunASR
cd funasr/runtime/python/websocket
pip install -r requirements_client.txt