remove duration

app.py

@@ -109,7 +109,7 @@ def translate_to_english(text):
 
   return chat_reply.choices[0].message.content
 
-@spaces.GPU(duration=50)
+@spaces.GPU
 def generate_images(history, conversation_times, last_genimg_times, generated_images):
   if generated_images is not None and last_genimg_times == conversation_times:
     return conversation_times, last_genimg_times, *generated_images  # 如果圖片已生成，直接返回