Remove patch allready commited on core.

issue11989.diff

@@ -1,17 +0,0 @@
-diff --git a/tryton/modules/purchase_request/purchase.py b/tryton/modules/purchase_request/purchase.py
-index 63425351b4..a63b557763 100644
---- a/tryton/modules/purchase_request/purchase.py
-+++ b/tryton/modules/purchase_request/purchase.py
-@@ -91,6 +91,12 @@ class Line(metaclass=PoolMeta):
-             'invisible': ~Eval('requests'),
-             })
- 
-+    @classmethod
-+    def copy(cls, lines, default=None):
-+        default = default.copy() if default is not None else {}
-+        default.setdefault('requests')
-+        return super().copy(lines, default=default)
-+
-     @classmethod
-     def delete(cls, lines):
-         pool = Pool()

series

@@ -38,6 +38,4 @@ issue11868.diff # [account] Add on delete CASCADE to lines and keywords of move
 issue11582.diff # [trytond] Add authentication services
 issue11582-sao.diff # [sao] Add authentication services
 
-issue11989.diff # [purchase_request] Clear requests when copying purchase lines
-
 issue11998.diff # [sale_shipment_grouping] KeyError when processing a sale with modules sale_shipment_cost and sale_shipment_grouping installed.