diff --git a/addons/sale_timesheet/models/account.py b/addons/sale_timesheet/models/account.py
index d73b10ea386..192d5ecfc5d 100644
--- a/addons/sale_timesheet/models/account.py
+++ b/addons/sale_timesheet/models/account.py
@@ -35,12 +35,6 @@ class AccountAnalyticLine(models.Model):
         for timesheet in self:
             timesheet.commercial_partner_id = timesheet.task_id.commercial_partner_id or timesheet.project_id.commercial_partner_id
 
-    # When user edit Sale Order Item(so_line) for timesheet make is_so_line_edited field true
-    @api.onchange('so_line')
-    def _onchange_so_line(self):
-        # TODO: [XBO] remove me in master
-        return
-
     @api.depends('so_line.product_id', 'project_id', 'amount')
     def _compute_timesheet_invoice_type(self):
         for timesheet in self: