fix: remove unused substituers

Author: kid

modules/base/nix/substituers.nix

@@ -3,20 +3,14 @@
     substituters = [
       "https://kidibox.cachix.org"
       "https://nix-community.cachix.org"
-      "https://hyprland.cachix.org"
       "https://devenv.cachix.org"
-      "https://nixpkgs-wayland.cachix.org"
-      "https://cosmic.cachix.org"
       "https://nix-gaming.cachix.org"
     ];
 
     trusted-public-keys = [
       "kidibox.cachix.org-1:BN875x9JUW61souPxjf7eA5Uh2k3A1OSA1JIb/axGGE="
       "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-      "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
       "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw="
-      "nixpkgs-wayland.cachix.org-1:3lwxaILxMRkVhehr5StQprHdEo4IrE8sRho9R9HOLYA="
-      "cosmic.cachix.org-1:Dya9IyXD4xdBehWjrkPv6rtxpmMdRel02smYzA85dPE="
       "nix-gaming.cachix.org-1:nbjlureqMbRAxR1gJ/f3hxemL9svXaZF/Ees8vCUUs4="
     ];
   };