Revert "calibre: continue to pull in from nixos-24.05 for now"

This reverts commit f9e5a42ca9.

flake.lock

@@ -192,22 +192,6 @@
         "type": "github"
       }
     },
-    "nixos-2405": {
-      "locked": {
-        "lastModified": 1731386116,
-        "narHash": "sha256-lKA770aUmjPHdTaJWnP3yQ9OI1TigenUqVC3wweqZuI=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "689fed12a013f56d4c4d3f612489634267d86529",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-24.05",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nixos-hardware": {
       "locked": {
         "lastModified": 1731797098,
@@ -340,7 +324,6 @@
         "lanzaboote": "lanzaboote",
         "mysecrets": "mysecrets",
         "nix-darwin": "nix-darwin",
-        "nixos-2405": "nixos-2405",
         "nixos-hardware": "nixos-hardware",
         "nixos-unstable": "nixos-unstable",
         "nixpkgs": "nixpkgs_2",