pep8 fix

src/Model/HydraulicStructures/HydraulicStructures.py

@@ -276,7 +276,7 @@ class HydraulicStructure(SQLSubModel):
     def _db_save(self, execute, data=None):
         if not self.must_be_saved():
             return True
-        
+
         execute(
             "DELETE FROM hydraulic_structures " +
             f"WHERE pamhyr_id = {self.pamhyr_id} " +