ft-analyzer fix duplicated validation

Author: pascal260303

tools/ft-analyzer/ftanalyzer/models/statistical_model.py

@@ -363,14 +363,8 @@ def validate(
         """
         start = time.time()
 
-        # run _validate_helper in parallel on different files
-        self._future_flow_values = self._executor.submit(
-            _validate_helper, self._flows_path, rules, self._generator_stats
-        )
-        self._future_ref_values = self._executor.submit(
-            _validate_helper, self._ref_path, rules, self._generator_stats, is_ref=True
-        )
-        flow_values, all_flow_masks = self._future_flow_values.result()
+        if self._fast_model is not None:
+            return validate_statistical_model(self._fast_model, rules, check_complement)
 
         # run _validate_helper in parallel on different files
         self._future_flow_values = self._executor.submit(
@@ -381,9 +375,6 @@ def validate(
         )
         flow_values, all_flow_masks = self._future_flow_values.result()
 
-        if self._fast_model is not None:
-            return validate_statistical_model(self._fast_model, rules, check_complement)
-
         report = StatisticalReport(self._log_dir)
         if check_complement:
             complement_rules = [SMRule(SMMetricType.__members__.values())]