Revert "apparmor: fix and improve the service"

This reverts commit fb6d63f3fd.

I really hope this finally fixes #99236: evaluation on Hydra.
This time I really did check basically the same commit on Hydra:
https://hydra.nixos.org/eval/1618011

Right now I don't have energy to find what exactly is wrong in the
commit, and it doesn't seem important in comparison to nixos-unstable
channel being stuck on a commit over one week old.

nixos/modules/security/apparmor/profiles.nix

@@ -1,11 +0,0 @@
-{ config, lib, pkgs, ... }:
-let apparmor = config.security.apparmor; in
-{
-config.security.apparmor.packages = [ pkgs.apparmor-profiles ];
-config.security.apparmor.policies."bin.ping".profile = lib.mkIf apparmor.policies."bin.ping".enable ''
-  include "${pkgs.iputils.apparmor}/bin.ping"
-  include "${pkgs.inetutils.apparmor}/bin.ping"
-  # Note that including those two profiles in the same profile
-  # would not work if the second one were to re-include <tunables/global>.
-'';
-}