python-project: delete template

this already went out-of-date and we haven't really used it, since its creation

templates/flake-module.nix

@@ -1,15 +1,8 @@
 {
-  imports = [
-    ./python-project/flake-module.nix
-  ];
   flake.templates = {
     new-clan = {
       description = "Initialize a new clan flake";
       path = ./new-clan;
     };
-    python-project = {
-      description = "Initialize a new internal python project";
-      path = ./python-project;
-    };
   };
 }