Remove *.nix files

.envrc

@@ -1,13 +0,0 @@
-#!/usr/bin/env bash
-# ^ added for shellcheck and file-type detection
-
-# Watch & reload direnv on change
-cd devshell || exit
-watch_file devshell.toml
-
-if [[ $(type -t use_flake) != function ]]; then
-  echo "ERROR: use_flake function missing."
-  echo "Please update direnv to v2.30.0 or later."
-  exit 1
-fi
-use flake

shell.nix

@@ -1,11 +0,0 @@
-let
-  unstable = import (fetchTarball https://github.com/nixos/nixpkgs/archive/nixos-unstable.tar.gz) { };
-in
-{ nixpkgs ? import <nixpkgs> {} }:
-with nixpkgs; mkShell {
-  buildInputs = [
-	ansible
-	ansible-lint
-  ];
-}
-