chore(gemma): Delete old image build configuration

services/gemma/gemma-docker.nix

@@ -1,19 +0,0 @@
-with import <nixpkgs> {}; 
-let
-  gemma = import ./default.nix;
-  entrypoint = writeScript "entrypoint.sh" ''
-    #!${stdenv.shell}
-    set -e
-    exec ${gemma}/bin/gemma
-  '';
-in dockerTools.buildImage {
-  name = "gemma";
-  contents = gemma; # [ gemma ];
-  config = {
-    Entrypoint = [ entrypoint ];
-    WorkingDir = "/data";
-    Volumes = {
-      "/data" = {};
-    };
-  };
-}