[docs] [issue25701] Document that tp_setattro and tp_setattr are used for deleting attributes

Martin Panter added the comment: Okay, I will look at making it say deleting via SetAttr etc is possible but is not the main purpose, and using DelAttr etc is recommended instead. ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue25701> _______________________________________