flake.nix: remove determinate

hosts/dunamis/nix.nix: replace with lix
hosts/eldrid/nix.nix: replace with lix
hosts/sarien/nix.nix: replace with lix
packages/wl-tray-bridge/default.nix: remove

Signed-off-by: unexplrd <unexplrd@linerds.us>

hosts/dunamis/nix.nix

@@ -1,13 +1,9 @@
 # TODO: better file name
 {
   config,
-  inputs,
   pkgs,
   ...
 }: {
-  imports = with inputs; [
-    # determinate.nixosModules.default
-  ];
   nix = {
     package = pkgs.lix;
     channel.enable = false;