掲示板 Forums - What to do with "old" Kana scedules?

So, when I started learning on Renshuu almost a year ago(I was doing Duolingo first but wanted to take learning japanese more seriously), I chose to also learn the Hiragana and Katakana alphabets, though I already knew all the Hiragana and most of the Katakana, I wanted to properly learn them here again. I learned all the letters from both scedules quite quickly and now, the scedules have just been sitting around on my dashboard. I don't really mind them being there, but I was wondering if they would disappear at some point or something (they propably don't), or if not, how I can remove them, and if I even should remove them or if I should just keep reviewing my 3-5 Kanas per day?

Thanks to anyone who helps!