30 days exp ring bonus

[Coutter 3]

How can i remove that 30 days ring exp bonus, glove etc... from a player account? 

Let me explain: on my server there are those 1 year exp 100%, glove50% and gold50%. And besides that its possible to buy those same bonuses for 30days, so here is my question: how to remove those 30 days ones?

[Floki 1]

Well, as I understand it, you can remove these bonuses from a player in the player / affect table