fix: improve maintenance and synchronize live conversations

backend/tests/api/test_crm_api.py

@@ -33,7 +33,6 @@ from app.core.auth import get_current_user
 from app.core.config import settings
 from app.crm.base import OAuthTokens
 from app.crm.hubspot import HubSpotAdapter
-from app.crm.pipedrive import PipedriveAdapter
 from app.database import get_db
 from app.models.crm import CrmConnectionStatus, CrmSyncJobStatus
 from app.models.lead_capture import LeadCaptureResponse