remove unused import

Author: YehoavR

tests/test_realtime_unit.py

@@ -296,7 +296,6 @@ def test_avatar_live_model_available():
 @pytest.mark.asyncio
 async def test_avatar_live_connect_with_avatar_image():
     """Test avatar-live connection with avatar image option"""
-    import asyncio
 
     client = DecartClient(api_key="test-key")