Removing duplicated code inside Gemini.

src/pipecat/services/gemini_multimodal_live/gemini.py

@@ -572,9 +572,6 @@ class GeminiMultimodalLiveLLMService(LLMService):
         # Initialize the File API client
         self.file_api = GeminiFileAPI(api_key=api_key, base_url=file_api_base_url)
 
-        # Initialize the File API client
-        self.file_api = GeminiFileAPI(api_key=api_key, base_url=file_api_base_url)
-
     def can_generate_metrics(self) -> bool:
         """Check if the service can generate usage metrics.