update:优化公共方法

main/xiaozhi-server/core/providers/tts/doubao.py

@@ -41,12 +41,6 @@ class TTSProvider(TTSProviderBase):
         self.header = {"Authorization": f"{self.authorization}{self.access_token}"}
         check_model_key("TTS", self.access_token)
 
-    def generate_filename(self, extension=".wav"):
-        return os.path.join(
-            self.output_file,
-            f"tts-{datetime.now().date()}@{uuid.uuid4().hex}{extension}",
-        )
-
     async def text_to_speak(self, text, output_file):
         request_json = {
             "app": {