fix: improve maintenance and synchronize live conversations

backend/tests/services/test_sentiment.py

@@ -14,15 +14,11 @@ See the License for the specific language governing permissions and
 limitations under the License.
 """
 
-import pytest
-from unittest.mock import patch, MagicMock
+from unittest.mock import patch
 from app.services.sentiment import (
     analyze_sentiment,
     compute_session_sentiment,
     _analyze_with_keywords,
-    _analyze_with_textblob,
-    POSITIVE_KEYWORDS,
-    NEGATIVE_KEYWORDS,
 )