pep8: Change to respect pep8 code style.

src/Model/HydraulicStructures/Basic/HydraulicStructures.py

@@ -29,6 +29,7 @@ from Model.HydraulicStructures.Basic.Value import (
 
 logger = logging.getLogger()
 
+
 class BasicHS(SQLSubModel):
     _sub_classes = [
         BHSValue,
@@ -142,7 +143,7 @@ class BasicHS(SQLSubModel):
 
         data['bhs_id'] = self.id
         execute(
-            "DELETE FROM hydraulic_structures_basic_value "+
+            "DELETE FROM hydraulic_structures_basic_value " +
             f"WHERE bhs = {bhs_id}"
         )