fix(SPG-538) BE - Formula - Muncul Error saat save - Cannot read properties of null

src/modules/transaction/sales-price-formula/domain/usecases/managers/update-sales-price-formula.manager.ts

@@ -16,9 +16,6 @@ export class UpdateSalesPriceFormulaManager extends BaseUpdateManager<SalesPrice
   }
 
   async beforeProcess(): Promise<void> {
-    Object.assign(this.data, {
-      formula_string: JSON.stringify(this.data.formula_render),
-    });
     return;
   }