nixos-sup: remove rider from dev-csharp bundle
Motivation
The current ACDC TP (TP9) required student to not use IDE but more traditional editor (as vim or emacs). Therefore to not allow tentation this MR disable Rider.
Description
disable Rider from the dev-csharp bundle.
Furture
this change need to be reverse after 21/02/2022 (issus need to be open)