To delete one2many line through wizard inherit create method of your wizard as below,

class YourWizard(model):
....
@api.model_create_multi
def create(self, vals):
sale_order_obj = self.env[‘sale.order’] # SaleOrder Recordset
order_line_obj = self.env['sale.order.line']
order_line_rm = []

for val in vals:
if val['product_ids']:
for product_id in val['product_ids'][0][2]:
if product_id in sale_order_obj.order_line.product_id.ids:
order_line_rm.extend(order_line_obj.search([('product_id', '=', product_id), ('id', 'in', sale_order_obj.order_line.ids)]).ids)

if order_line_rm:
sale_order_obj.write({
'order_line': [[3, id] for id in order_line_rm]
})
return super(YourWizard, self).create(vals)

For referance I create function to delete orderline from “sale.order” model.