Update ui/tabs.py

ui/tabs.py

@@ -11,8 +11,7 @@ from services.openai_realtime_service import HybridStreamingService
 from services.stream_object_detection_service import  StreamObjectDetection
 from services.voice_coding_service import  VoiceCodingService
 from services.sambanova_voice_service import  SambanovaVoiceService
-from services.gemini_realtime_service import GeminiRealtimeService, GeminiStreamHandler
-
+from services.gemini_realtime_service import GeminiRealtimeService
 from core.rag_system import EnhancedRAGSystem
 from core.tts_service import EnhancedTTSService
 from core.wikipedia_processor import WikipediaProcessor