terminal-notifier: drop redundant apple-sdk

The default SDK is included in the Darwin stdenv, so packages that use
the default do not need to list `apple-sdk` explicitly
(https://nixos.org/manual/nixpkgs/unstable/#sec-darwin).

Assisted-by: Claude Opus 4.8 (claude-opus-4-8)

pkgs/by-name/te/terminal-notifier/package.nix

@@ -1,5 +1,4 @@
 {
-  apple-sdk,
   fetchFromGitHub,
   ibtool,
   lib,
@@ -32,10 +31,6 @@ stdenv.mkDerivation (finalAttrs: {
     llvmPackages.lld
   ];
 
-  buildInputs = [
-    apple-sdk
-  ];
-
   xcbuildFlags = [
     "-target"
     "terminal-notifier"