Clear giveaway channel after xx timeframe after giveaway has ended.

[Skyridr]

A feature that gives you the ability for the bot to clean the channel it posted the giveaways in after xx minutes / hours or days after the giveaway has ended. Seeing a list is kept through DM & Logs who won what, it's nice to keep things clean in the channel. Especially if the channel is only made for giveaways.