diff --git a/addons/website_sale/models/__init__.py b/addons/website_sale/models/__init__.py
index ad98431fbaf..d6c4695f4e4 100644
--- a/addons/website_sale/models/__init__.py
+++ b/addons/website_sale/models/__init__.py
@@ -7,7 +7,6 @@ from . import mail_compose_message
 from . import product
 from . import res_country
 from . import res_partner
-from . import payment
 from . import sale_order
 from . import website
 from . import res_config_settings
diff --git a/addons/website_sale/models/payment.py b/addons/website_sale/models/payment.py
deleted file mode 100644
index 9981baa94e3..00000000000
--- a/addons/website_sale/models/payment.py
+++ /dev/null
@@ -1,25 +0,0 @@
-# -*- coding: utf-8 -*-
-# Part of Odoo. See LICENSE file for full copyright and licensing details.
-
-import logging
-
-from odoo import models
-
-_logger = logging.getLogger(__name__)
-
-
-class PaymentTransaction(models.Model):
-    _inherit = 'payment.transaction'
-
-    # --------------------------------------------------
-    # Sale management
-    # --------------------------------------------------
-
-    def _confirm_so(self):
-        """Generate the invoice automatically when option is enabled from ecommerce setting"""
-        result = super(PaymentTransaction, self)._confirm_so()
-        IrConfigParameter = self.env['ir.config_parameter'].sudo()
-        if self.state == 'done' and IrConfigParameter.get_param('sale_payment.automatic_invoice', default=False):
-            _logger.info('<%s> transaction completed, generating invoice for order %s (ID %s)', self.acquirer_id.provider, self.sale_order_id.name, self.sale_order_id.id)
-            self._generate_and_pay_invoice()
-        return result
diff --git a/addons/website_sale/models/sale_order.py b/addons/website_sale/models/sale_order.py
index b0de22315b7..5a9141485e9 100644
--- a/addons/website_sale/models/sale_order.py
+++ b/addons/website_sale/models/sale_order.py
@@ -23,19 +23,9 @@ class SaleOrder(models.Model):
     )
     cart_quantity = fields.Integer(compute='_compute_cart_info', string='Cart Quantity')
     only_services = fields.Boolean(compute='_compute_cart_info', string='Only Services')
-    can_directly_mark_as_paid = fields.Boolean(compute='_compute_can_directly_mark_as_paid',
-        string="Can be directly marked as paid", store=True,
-        help="""Checked if the sales order can directly be marked as paid, i.e. if the quotation
-                is sent or confirmed and if the payment acquire is of the type transfer or manual""")
     is_abandoned_cart = fields.Boolean('Abandoned Cart', compute='_compute_abandoned_cart', search='_search_abandoned_cart')
     cart_recovery_email_sent = fields.Boolean('Cart recovery email already sent')
 
-    @api.depends('state', 'transaction_ids')
-    def _compute_can_directly_mark_as_paid(self):
-        for order in self:
-            transaction = order.get_portal_last_transaction()
-            order.can_directly_mark_as_paid = order.state in ['sent', 'sale'] and transaction and transaction.acquirer_id.provider in ['transfer', 'manual']
-
     @api.multi
     @api.depends('website_order_line.product_uom_qty', 'website_order_line.product_id')
     def _compute_cart_info(self):
@@ -241,22 +231,6 @@ class SaleOrder(models.Model):
             },
         }
 
-    def action_mark_as_paid(self):
-        """ Mark directly a sales order as paid if:
-                - State: Quotation Sent, or sales order
-                - Provider: wire transfer or manual config
-            The transaction is marked as done
-            The invoice may be generated and marked as paid if configured in the website settings
-            """
-        self.ensure_one()
-        if self.can_directly_mark_as_paid:
-            self.action_confirm()
-            if self.env['ir.config_parameter'].sudo().get_param('sale_payment.automatic_invoice', default=False):
-                self.payment_tx_id._generate_and_pay_invoice()
-            self.payment_tx_id.state = 'done'
-        else:
-            raise ValidationError(_("The quote should be sent and the payment acquirer type should be manual or wire transfer"))
-
     def _set_demo_create_date(self, create_date):
         self.env.cr.execute("""UPDATE sale_order SET create_date=%s WHERE id IN %s """, (create_date, tuple(self.ids)))
         self.modified(['create_date'])
diff --git a/addons/website_sale/views/sale_order_views.xml b/addons/website_sale/views/sale_order_views.xml
index b02ac550549..e80895b0678 100644
--- a/addons/website_sale/views/sale_order_views.xml
+++ b/addons/website_sale/views/sale_order_views.xml
@@ -228,15 +228,4 @@
         action="product.variants_action"
         parent="menu_product_settings" groups="product.group_product_variant" sequence="3"/>
 
-    <record id="sale_order_view_form" model="ir.ui.view">
-        <field name="name">sale.order.form</field>
-        <field name="model">sale.order</field>
-        <field name="inherit_id" ref="sale.view_order_form"/>
-        <field name="arch" type="xml">
-            <field name="partner_id" position="after">
-                <field name="can_directly_mark_as_paid" invisible="1"/>
-            </field>
-        </field>
-    </record>
-
 </odoo>