removed terranix

for the time being it makes sense to have terranix in its own repo
untill i design a better flake-parts variant

modules/flake/terranix.nix

@@ -1,35 +0,0 @@
-{
-  inputs,
-  ...
-}:
-{
-  imports = [
-    inputs.terranix.flakeModule
-  ];
-  perSystem =
-    { pkgs, ... }:
-    let
-      package = pkgs.opentofu.withPlugins (p: [
-        p.external
-        p.local
-        p.null
-        p.tls
-        p.incus
-      ]);
-    in
-    {
-      terranix = {
-        terranixConfigurations = {
-          tnix = {
-            terraformWrapper = {
-              inherit package;
-            };
-            workdir = "terraform";
-            modules = [
-              # ../terranix/default.nix
-            ];
-          };
-        };
-      };
-    };
-}