🧹 Remove live statistics

[LegoPink]

Describe the bug When in the screen of a class (logged in as teacher), when I press the 'Live Statistieken ' button, I get an error

[Felienne]

Yeah sadly the live statistics suffer from some performance issues, we hope to be able to pick them up in the hackathon next week! (Are you also coming @LegoPink??)

[LegoPink]

I might come to the hackathon on Thursday, not sure yet, but I have other plans for Friday

[Felienne]

We can close this once we have removed the code