Remove broken way of thinking about devshells

Need a better way of providing good defaults

flake.nix

@@ -50,14 +50,12 @@
             "aarch64-linux"
             "aarch64-darwin"
           ],
-          devShellPackages ? (pkgs: [ ]),
           treeFmtFile ? ./treefmt.nix,
           ...
         }:
         let
           snowfallOptions = builtins.removeAttrs options [
             "flakeBaseSystems"
-            "devShellPackages"
             "treeFmtFile"
           ];
           flake = snowfall-lib.mkFlake snowfallOptions;
@@ -74,15 +72,6 @@
             checks = flake.checks.${system} // {
               fmt = treeFmtEval.config.build.check self;
             };
-            devShells = flake.devShells.${system} // {
-              default =
-                flake.devShells.${system}.default or (pkgs.mkShell {
-                  packages = [
-                    pkgs.nixfmt-rfc-style
-                    pkgs.nixd
-                  ] ++ (devShellPackages pkgs);
-                });
-            };
           }
         ));
     };