Fixup facade usage

Author: andreas-el

src/ert/libres_facade.py

@@ -160,9 +160,9 @@ def have_observations(self) -> bool:
         return self._enkf_main.have_observations()
 
     def is_valid_runpath(self) -> bool:
-        actives = self.facade.get_active_realizations()
-        iter_0_paths = set(self.facade.get_run_paths(actives, 0))
-        iter_1_paths = set(self.facade.get_run_paths(actives, 1))
+        actives = self.get_active_realizations()
+        iter_0_paths = set(self.get_run_paths(actives, 0))
+        iter_1_paths = set(self.get_run_paths(actives, 1))
         return len(iter_0_paths) == len(actives) and iter_0_paths != iter_1_paths
 
     @property