remove plutus-data

Author: chfanghr

flake.nix

@@ -24,7 +24,6 @@
 
         ./plutus-ledger-api/build.nix
         ./is-plutus-data-derive/build.nix
-        ./plutus-data/build.nix
       ];
       debug = true;
       systems = [ "x86_64-linux" "x86_64-darwin" ];