fix(impact.py): add statsmodels lib, remove import

Author: davidpomerenke

backend-python/pyproject.toml

@@ -31,6 +31,7 @@ dependencies = [
     "uvicorn",
     "websockets",
     "zenrows>=1.4.0",
+    "statsmodels>=0.14.4",
 ]
 
 [project.optional-dependencies]

backend-python/src/media_impact_monitor/impact.py

@@ -1,9 +1,6 @@
 import pandas as pd
 
 from media_impact_monitor.events import get_events
-from media_impact_monitor.impact_estimators.interrupted_time_series import (
-    estimate_mean_impact as interrupted_time_series,
-)
 from media_impact_monitor.impact_estimators.time_series_regression import (
     estimate_impact as time_series_regression,
 )