chore(nix): drop flake-checks

flake.lock

@@ -1,20 +1,5 @@
 {
   "nodes": {
-    "flake-checks": {
-      "locked": {
-        "lastModified": 1726652014,
-        "narHash": "sha256-TdbcCjW6z3VsFg1uvrvCdp0pzFXUyP8qegp8dSmQuaE=",
-        "owner": "getchoo",
-        "repo": "flake-checks",
-        "rev": "108aa8f5a8a610ae14c1edb61017dd750b666ed6",
-        "type": "github"
-      },
-      "original": {
-        "owner": "getchoo",
-        "repo": "flake-checks",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1727335715,
@@ -33,7 +18,6 @@
     },
     "root": {
       "inputs": {
-        "flake-checks": "flake-checks",
         "nixpkgs": "nixpkgs",
         "rust-overlay": "rust-overlay"
       }

flake.nix

@@ -4,8 +4,6 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
 
-    flake-checks.url = "github:getchoo/flake-checks";
-
     rust-overlay = {
       url = "github:oxalica/rust-overlay";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -15,7 +13,6 @@
   outputs = {
     self,
     nixpkgs,
-    flake-checks,
     rust-overlay,
   }: let
     systems = [
@@ -27,19 +24,6 @@
 
     forAllSystems = fn: nixpkgs.lib.genAttrs systems (system: fn nixpkgs.legacyPackages.${system});
   in {
-    checks = forAllSystems (pkgs: let
-      flake-checks' = flake-checks.lib.mkChecks {
-        inherit pkgs;
-        root = ./.;
-      };
-    in {
-      check-actionlint = flake-checks'.actionlint;
-      check-alejandra = flake-checks'.alejandra;
-      check-deadnix = flake-checks'.deadnix;
-      check-rustfmt = flake-checks'.rustfmt;
-      check-statix = flake-checks'.statix;
-    });
-
     devShells = forAllSystems (pkgs: {
       default = pkgs.mkShell {
         packages = with pkgs; [