fix(BE): remove supplier price in master nonstock

internal/modules/master/nonstocks/repositories/nonstock.repository.go

@@ -61,30 +61,20 @@ func (r *NonstockRepositoryImpl) SyncSuppliersDiff(ctx context.Context, tx *gorm
 		return err
 	}
 
-	existingMap := make(map[uint]entity.NonstockSupplier, len(existing))
+	existingMap := make(map[uint]struct{}, len(existing))
 	for _, rel := range existing {
-		existingMap[rel.SupplierId] = rel
+		existingMap[rel.SupplierId] = struct{}{}
 	}
 
 	incomingMap := make(map[uint]struct{}, len(suppliers))
 	for _, rel := range suppliers {
 		incomingMap[rel.SupplierId] = struct{}{}
-		if existingRel, exists := existingMap[rel.SupplierId]; exists {
-			if existingRel.Price != rel.Price {
-				if err := db.WithContext(ctx).
-					Model(&entity.NonstockSupplier{}).
-					Where("nonstock_id = ? AND supplier_id = ?", nonstockID, rel.SupplierId).
-					Update("price", rel.Price).
-					Error; err != nil {
-					return err
-				}
-			}
+		if _, exists := existingMap[rel.SupplierId]; exists {
 			continue
 		}
 		record := entity.NonstockSupplier{
 			NonstockId: nonstockID,
 			SupplierId: rel.SupplierId,
-			Price:      rel.Price,
 		}
 		if err := db.WithContext(ctx).Create(&record).Error; err != nil {
 			return err