nixos/tools: remove deprecated accessors for pkgs.nixos-option and pkgs.nixos-enter

These warnings were added in 5dcbab6. It has been a full year since they were added -- time to remove them.

Changed files
-2
nixos
modules
installer
tools
-2
nixos/modules/installer/tools/tools.nix
···
system.build = {
inherit nixos-generate-config nixos-install;
nixos-rebuild = if config.system.rebuild.enableNg then nixos-rebuild-ng else nixos-rebuild;
-
nixos-option = lib.warn "Accessing nixos-option through `config.system.build` is deprecated, use `pkgs.nixos-option` instead." pkgs.nixos-option;
-
nixos-enter = lib.warn "Accessing nixos-enter through `config.system.build` is deprecated, use `pkgs.nixos-enter` instead." pkgs.nixos-enter;
};
};
}