fix: Silence warning when receiving analytics for unknown flags (#5552)

Author: rolodato

api/app_analytics/views.py

@@ -85,9 +85,6 @@ def _is_data_valid(self) -> bool:
         for evaluation in self.evaluations:
             if evaluation["feature_name"] in environment_feature_names:
                 continue
-            logger.warning(
-                f"Feature {evaluation['feature_name']} does not belong to project"
-            )
             valid = False
 
         return valid