diff --git a/stock_usability/stock.py b/stock_usability/stock.py
index 780cafc..12dcba6 100644
--- a/stock_usability/stock.py
+++ b/stock_usability/stock.py
@@ -67,12 +67,6 @@ class StockWarehouseOrderpoint(models.Model):
         )]
 
 
-class StockQuant(models.Model):
-    _inherit = 'stock.quant'
-
-    qty = fields.Float(digits=dp.get_precision('Product Unit of Measure'))
-
-
 class StockMove(models.Model):
     _inherit = 'stock.move'
 
@@ -101,12 +95,6 @@ class StockMove(models.Model):
         return res
 
 
-class StockMoveOperationLink(models.Model):
-    _inherit = 'stock.move.operation.link'
-
-    qty = fields.Float(digits=dp.get_precision('Product Unit of Measure'))
-
-
 class ProcurementOrder(models.Model):
     _inherit = "procurement.order"