Are the rune-presets permanent?

Hello there The new preseason just rolled in and I have a lot of fun messing around with the new runes. But I am a little bit distracted by the rune-presets. They can not be deleted and just take up some space, while I only use my own sets. Is this a temporary feature in the preseason that can be removed later or are they meant to be permanent? I would like to have my runelist with only my runepages. (yeah, ofc this is a serious problem that is urgent and gamebreaking. :^) ) Thx for helping and have a great day
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