Update plugin_audio_api.py (#1204)

Update plugin_audio_api.py 

Signed-off-by: Sihan Chen <39623753+Spycsh@users.noreply.github.com>

intel_extension_for_transformers/neural_chat/server/restful/plugin_audio_api.py

@@ -98,10 +98,9 @@ async def talkingbot(request: Request):
     data = await request.json()
     text = data["text"]
     voice = data["voice"]
-    knowledge_id = data["knowledge_id"]
     audio_output_path = data["audio_output_path"] if "audio_output_path" in data else "output_audio.wav"
 
-    logger.info(f'Received prompt: {text}, and use voice: {voice} knowledge_id: {knowledge_id}')
+    logger.info(f'Received prompt: {text}, and use voice: {voice}')
 
     return await router.handle_voice_tts_request(text, voice, audio_output_path)