[FIX] sale,purchase : Remove the defualt uom_id from sale order line and purchase order line

lp bug: https://launchpad.net/bugs/958897 fixed

bzr revid: amp@tinyerp.com-20120424070239-tm531qp5js7uhzfc

addons/purchase/purchase.py

@@ -706,14 +706,6 @@ class purchase_order_line(osv.osv):
             res[line.id] = cur_obj.round(cr, uid, cur, taxes['total'])
         return res
 
-    def _get_uom_id(self, cr, uid, context=None):
-        try:
-            proxy = self.pool.get('ir.model.data')
-            result = proxy.get_object_reference(cr, uid, 'product', 'product_uom_unit')
-            return result[1]
-        except Exception, ex:
-            return False
-
     _columns = {
         'name': fields.char('Description', size=256, required=True),
         'product_qty': fields.float('Quantity', digits_compute=dp.get_precision('Product UoM'), required=True),
@@ -741,7 +733,6 @@ class purchase_order_line(osv.osv):
 
     }
     _defaults = {
-        'product_uom' : _get_uom_id,
         'product_qty': lambda *a: 1.0,
         'state': lambda *args: 'draft',
         'invoiced': lambda *a: 0,

addons/sale/sale.py

@@ -990,14 +990,6 @@ class sale_order_line(osv.osv):
                 res[line.id] = 1
         return res
 
-    def _get_uom_id(self, cr, uid, *args):
-        try:
-            proxy = self.pool.get('ir.model.data')
-            result = proxy.get_object_reference(cr, uid, 'product', 'product_uom_unit')
-            return result[1]
-        except Exception, ex:
-            return False
-
     _name = 'sale.order.line'
     _description = 'Sales Order Line'
     _columns = {
@@ -1038,7 +1030,6 @@ class sale_order_line(osv.osv):
     }
     _order = 'sequence, id'
     _defaults = {
-        'product_uom' : _get_uom_id,
         'discount': 0.0,
         'delay': 0.0,
         'product_uom_qty': 1,