haskellPackages.SCalendar: try to restore the bot capacity to evaluate

Remove infinite recursion between SCalendar and scalendar:

https://gist.github.com/GrahamcOfBorg/eb6d5675657ddc3cc3f054305b11dcb5

pkgs/development/haskell-modules/hackage-packages.nix

···
        sha256 = "139lggc8f7sw703asdyxqbja0jfcgphx0l5si1046lsryinvywa9";
        libraryHaskellDepends = [ base containers text time ];
        testHaskellDepends = [
-         base containers hspec QuickCheck scalendar text time
+         base containers hspec QuickCheck text time
        ];
        homepage = "https://www.researchgate.net/publication/311582722_Method_of_Managing_Resources_in_a_Telecommunication_Network_or_a_Computing_System";
        description = "This is a library for handling calendars and resource availability based on the \"top-nodes algorithm\" and set operations";