[secrets] Remove altogether

I'm standardizing on bitwarden and rbw for secrets. No need to build out
a separate secret management system. The complexity of this was just not
worth it for my effectively single-user workflows

flake.lock

@@ -137,28 +137,7 @@
         "home-manager": "home-manager",
         "nixos-wsl": "nixos-wsl",
         "nixpkgs": "nixpkgs_2",
-        "plasma-manager": "plasma-manager",
-        "sops-nix": "sops-nix"
-      }
-    },
-    "sops-nix": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1751606940,
-        "narHash": "sha256-KrDPXobG7DFKTOteqdSVeL1bMVitDcy7otpVZWDE6MA=",
-        "owner": "Mic92",
-        "repo": "sops-nix",
-        "rev": "3633fc4acf03f43b260244d94c71e9e14a2f6e0d",
-        "type": "github"
-      },
-      "original": {
-        "owner": "Mic92",
-        "repo": "sops-nix",
-        "type": "github"
+        "plasma-manager": "plasma-manager"
       }
     }
   },