Remove tree structure from company

issue10163
review332181002

tests/scenario_sale_shipment_grouping.rst

@@ -34,7 +34,6 @@ Create sale user::
     >>> sale_user = User()
     >>> sale_user.name = 'Sale'
     >>> sale_user.login = 'sale'
-    >>> sale_user.main_company = company
     >>> sale_group, = sale_user.groups.find([('name', '=', 'Sales')])
     >>> sale_user.groups.append(sale_group)
     >>> sale_user.save()
@@ -44,7 +43,6 @@ Create stock user::
     >>> stock_user = User()
     >>> stock_user.name = 'Stock'
     >>> stock_user.login = 'stock'
-    >>> stock_user.main_company = company
     >>> stock_group, = Group.find([('name', '=', 'Stock')])
     >>> stock_user.groups.append(stock_group)
     >>> stock_user.save()